21102480

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:158

約数の個数: 240

約数和(自身を含む): 83566080

約数和(自身を除く): 62463600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 53, 56, 60, 63, 70, 72, 79, 80, 84, 90, 105, 106, 112, 120, 126, 140, 144, 158, 159, 168, 180, 210, 212, 237, 240, 252, 265, 280, 315, 316, 318, 336, 360, 371, 395, 420, 424, 474, 477, 504, 530, 553, 560, 630, 632, 636, 711, 720, 742, 790, 795, 840, 848, 948, 954, 1008, 1060, 1106, 1113, 1185, 1260, 1264, 1272, 1422, 1484, 1580, 1590, 1659, 1680, 1855, 1896, 1908, 2120, 2212, 2226, 2370, 2385, 2520, 2544, 2765, 2844, 2968, 3160, 3180, 3318, 3339, 3555, 3710, 3792, 3816, 4187, 4240, 4424, 4452, 4740, 4770, 4977, 5040, 5530, 5565, 5688, 5936, 6320, 6360, 6636, 6678, 7110, 7420, 7632, 8295, 8374, 8848, 8904, 9480, 9540, 9954, 11060, 11130, 11376, 12561, 12720, 13272, 13356, 14220, 14840, 16590, 16695, 16748, 17808, 18960, 19080, 19908, 20935, 22120, 22260, 24885, 25122, 26544, 26712, 28440, 29309, 29680, 33180, 33390, 33496, 37683, 38160, 39816, 41870, 44240, 44520, 49770, 50244, 53424, 56880, 58618, 62805, 66360, 66780, 66992, 75366, 79632, 83740, 87927, 89040, 99540, 100488, 117236, 125610, 132720, 133560, 146545, 150732, 167480, 175854, 188415, 199080, 200976, 234472, 251220, 263781, 267120, 293090, 301464, 334960, 351708, 376830, 398160, 439635, 468944, 502440, 527562, 586180, 602928, 703416, 753660, 879270, 1004880, 1055124, 1172360, 1318905, 1406832, 1507320, 1758540, 2110248, 2344720, 2637810, 3014640, 3517080, 4220496, 5275620, 7034160, 10551240, 21102480]

約数ペア:

[(1, 21102480), (2, 10551240), (3, 7034160), (4, 5275620), (5, 4220496), (6, 3517080), (7, 3014640), (8, 2637810), (9, 2344720), (10, 2110248), (12, 1758540), (14, 1507320), (15, 1406832), (16, 1318905), (18, 1172360), (20, 1055124), (21, 1004880), (24, 879270), (28, 753660), (30, 703416), (35, 602928), (36, 586180), (40, 527562), (42, 502440), (45, 468944), (48, 439635), (53, 398160), (56, 376830), (60, 351708), (63, 334960), (70, 301464), (72, 293090), (79, 267120), (80, 263781), (84, 251220), (90, 234472), (105, 200976), (106, 199080), (112, 188415), (120, 175854), (126, 167480), (140, 150732), (144, 146545), (158, 133560), (159, 132720), (168, 125610), (180, 117236), (210, 100488), (212, 99540), (237, 89040), (240, 87927), (252, 83740), (265, 79632), (280, 75366), (315, 66992), (316, 66780), (318, 66360), (336, 62805), (360, 58618), (371, 56880), (395, 53424), (420, 50244), (424, 49770), (474, 44520), (477, 44240), (504, 41870), (530, 39816), (553, 38160), (560, 37683), (630, 33496), (632, 33390), (636, 33180), (711, 29680), (720, 29309), (742, 28440), (790, 26712), (795, 26544), (840, 25122), (848, 24885), (948, 22260), (954, 22120), (1008, 20935), (1060, 19908), (1106, 19080), (1113, 18960), (1185, 17808), (1260, 16748), (1264, 16695), (1272, 16590), (1422, 14840), (1484, 14220), (1580, 13356), (1590, 13272), (1659, 12720), (1680, 12561), (1855, 11376), (1896, 11130), (1908, 11060), (2120, 9954), (2212, 9540), (2226, 9480), (2370, 8904), (2385, 8848), (2520, 8374), (2544, 8295), (2765, 7632), (2844, 7420), (2968, 7110), (3160, 6678), (3180, 6636), (3318, 6360), (3339, 6320), (3555, 5936), (3710, 5688), (3792, 5565), (3816, 5530), (4187, 5040), (4240, 4977), (4424, 4770), (4452, 4740)]