81471240

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1$

素因数の和:356

約数の個数: 192

約数和(自身を含む): 286228800

約数和(自身を除く): 204757560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 43, 45, 57, 60, 72, 76, 86, 90, 95, 114, 120, 129, 152, 171, 172, 180, 190, 215, 228, 258, 277, 285, 342, 344, 360, 380, 387, 430, 456, 516, 554, 570, 645, 684, 760, 774, 817, 831, 855, 860, 1032, 1108, 1140, 1290, 1368, 1385, 1548, 1634, 1662, 1710, 1720, 1935, 2216, 2280, 2451, 2493, 2580, 2770, 3096, 3268, 3324, 3420, 3870, 4085, 4155, 4902, 4986, 5160, 5263, 5540, 6536, 6648, 6840, 7353, 7740, 8170, 8310, 9804, 9972, 10526, 11080, 11911, 12255, 12465, 14706, 15480, 15789, 16340, 16620, 19608, 19944, 21052, 23822, 24510, 24930, 26315, 29412, 31578, 32680, 33240, 35733, 36765, 42104, 47367, 47644, 49020, 49860, 52630, 58824, 59555, 63156, 71466, 73530, 78945, 94734, 95288, 98040, 99720, 105260, 107199, 119110, 126312, 142932, 147060, 157890, 178665, 189468, 210520, 214398, 226309, 236835, 238220, 285864, 294120, 315780, 357330, 378936, 428796, 452618, 473670, 476440, 535995, 631560, 678927, 714660, 857592, 905236, 947340, 1071990, 1131545, 1357854, 1429320, 1810472, 1894680, 2036781, 2143980, 2263090, 2715708, 3394635, 4073562, 4287960, 4526180, 5431416, 6789270, 8147124, 9052360, 10183905, 13578540, 16294248, 20367810, 27157080, 40735620, 81471240]

約数ペア:

[(1, 81471240), (2, 40735620), (3, 27157080), (4, 20367810), (5, 16294248), (6, 13578540), (8, 10183905), (9, 9052360), (10, 8147124), (12, 6789270), (15, 5431416), (18, 4526180), (19, 4287960), (20, 4073562), (24, 3394635), (30, 2715708), (36, 2263090), (38, 2143980), (40, 2036781), (43, 1894680), (45, 1810472), (57, 1429320), (60, 1357854), (72, 1131545), (76, 1071990), (86, 947340), (90, 905236), (95, 857592), (114, 714660), (120, 678927), (129, 631560), (152, 535995), (171, 476440), (172, 473670), (180, 452618), (190, 428796), (215, 378936), (228, 357330), (258, 315780), (277, 294120), (285, 285864), (342, 238220), (344, 236835), (360, 226309), (380, 214398), (387, 210520), (430, 189468), (456, 178665), (516, 157890), (554, 147060), (570, 142932), (645, 126312), (684, 119110), (760, 107199), (774, 105260), (817, 99720), (831, 98040), (855, 95288), (860, 94734), (1032, 78945), (1108, 73530), (1140, 71466), (1290, 63156), (1368, 59555), (1385, 58824), (1548, 52630), (1634, 49860), (1662, 49020), (1710, 47644), (1720, 47367), (1935, 42104), (2216, 36765), (2280, 35733), (2451, 33240), (2493, 32680), (2580, 31578), (2770, 29412), (3096, 26315), (3268, 24930), (3324, 24510), (3420, 23822), (3870, 21052), (4085, 19944), (4155, 19608), (4902, 16620), (4986, 16340), (5160, 15789), (5263, 15480), (5540, 14706), (6536, 12465), (6648, 12255), (6840, 11911), (7353, 11080), (7740, 10526), (8170, 9972), (8310, 9804)]