18916560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 240

約数和(自身を含む): 71495424

約数和(自身を除く): 52578864

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 43, 45, 47, 48, 52, 60, 65, 72, 78, 80, 86, 90, 94, 104, 117, 120, 129, 130, 141, 144, 156, 172, 180, 188, 195, 208, 215, 234, 235, 240, 258, 260, 282, 312, 344, 360, 376, 387, 390, 423, 430, 468, 470, 516, 520, 559, 564, 585, 611, 624, 645, 688, 705, 720, 752, 774, 780, 846, 860, 936, 940, 1032, 1040, 1118, 1128, 1170, 1222, 1290, 1410, 1548, 1560, 1677, 1692, 1720, 1833, 1872, 1880, 1935, 2021, 2064, 2115, 2236, 2256, 2340, 2444, 2580, 2795, 2820, 3055, 3096, 3120, 3354, 3384, 3440, 3666, 3760, 3870, 4042, 4230, 4472, 4680, 4888, 5031, 5160, 5499, 5590, 5640, 6063, 6110, 6192, 6708, 6768, 7332, 7740, 8084, 8385, 8460, 8944, 9165, 9360, 9776, 10062, 10105, 10320, 10998, 11180, 11280, 12126, 12220, 13416, 14664, 15480, 16168, 16770, 16920, 18189, 18330, 20124, 20210, 21996, 22360, 24252, 24440, 25155, 26273, 26832, 27495, 29328, 30315, 30960, 32336, 33540, 33840, 36378, 36660, 40248, 40420, 43992, 44720, 48504, 48880, 50310, 52546, 54990, 60630, 67080, 72756, 73320, 78819, 80496, 80840, 87984, 90945, 97008, 100620, 105092, 109980, 121260, 131365, 134160, 145512, 146640, 157638, 161680, 181890, 201240, 210184, 219960, 236457, 242520, 262730, 291024, 315276, 363780, 394095, 402480, 420368, 439920, 472914, 485040, 525460, 630552, 727560, 788190, 945828, 1050920, 1182285, 1261104, 1455120, 1576380, 1891656, 2101840, 2364570, 3152760, 3783312, 4729140, 6305520, 9458280, 18916560]

約数ペア:

[(1, 18916560), (2, 9458280), (3, 6305520), (4, 4729140), (5, 3783312), (6, 3152760), (8, 2364570), (9, 2101840), (10, 1891656), (12, 1576380), (13, 1455120), (15, 1261104), (16, 1182285), (18, 1050920), (20, 945828), (24, 788190), (26, 727560), (30, 630552), (36, 525460), (39, 485040), (40, 472914), (43, 439920), (45, 420368), (47, 402480), (48, 394095), (52, 363780), (60, 315276), (65, 291024), (72, 262730), (78, 242520), (80, 236457), (86, 219960), (90, 210184), (94, 201240), (104, 181890), (117, 161680), (120, 157638), (129, 146640), (130, 145512), (141, 134160), (144, 131365), (156, 121260), (172, 109980), (180, 105092), (188, 100620), (195, 97008), (208, 90945), (215, 87984), (234, 80840), (235, 80496), (240, 78819), (258, 73320), (260, 72756), (282, 67080), (312, 60630), (344, 54990), (360, 52546), (376, 50310), (387, 48880), (390, 48504), (423, 44720), (430, 43992), (468, 40420), (470, 40248), (516, 36660), (520, 36378), (559, 33840), (564, 33540), (585, 32336), (611, 30960), (624, 30315), (645, 29328), (688, 27495), (705, 26832), (720, 26273), (752, 25155), (774, 24440), (780, 24252), (846, 22360), (860, 21996), (936, 20210), (940, 20124), (1032, 18330), (1040, 18189), (1118, 16920), (1128, 16770), (1170, 16168), (1222, 15480), (1290, 14664), (1410, 13416), (1548, 12220), (1560, 12126), (1677, 11280), (1692, 11180), (1720, 10998), (1833, 10320), (1872, 10105), (1880, 10062), (1935, 9776), (2021, 9360), (2064, 9165), (2115, 8944), (2236, 8460), (2256, 8385), (2340, 8084), (2444, 7740), (2580, 7332), (2795, 6768), (2820, 6708), (3055, 6192), (3096, 6110), (3120, 6063), (3354, 5640), (3384, 5590), (3440, 5499), (3666, 5160), (3760, 5031), (3870, 4888), (4042, 4680), (4230, 4472)]