81307260

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{521}}^1$

素因数の和:573

約数の個数: 144

約数和(自身を含む): 269226720

約数和(自身を除く): 187919460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 85, 90, 102, 108, 135, 153, 170, 180, 204, 255, 270, 289, 306, 340, 459, 510, 521, 540, 578, 612, 765, 867, 918, 1020, 1042, 1156, 1445, 1530, 1563, 1734, 1836, 2084, 2295, 2601, 2605, 2890, 3060, 3126, 3468, 4335, 4590, 4689, 5202, 5210, 5780, 6252, 7803, 7815, 8670, 8857, 9180, 9378, 10404, 10420, 13005, 14067, 15606, 15630, 17340, 17714, 18756, 23445, 26010, 26571, 28134, 31212, 31260, 35428, 39015, 44285, 46890, 52020, 53142, 56268, 70335, 78030, 79713, 88570, 93780, 106284, 132855, 140670, 150569, 156060, 159426, 177140, 239139, 265710, 281340, 301138, 318852, 398565, 451707, 478278, 531420, 602276, 752845, 797130, 903414, 956556, 1195695, 1355121, 1505690, 1594260, 1806828, 2258535, 2391390, 2710242, 3011380, 4065363, 4517070, 4782780, 5420484, 6775605, 8130726, 9034140, 13551210, 16261452, 20326815, 27102420, 40653630, 81307260]

約数ペア:

[(1, 81307260), (2, 40653630), (3, 27102420), (4, 20326815), (5, 16261452), (6, 13551210), (9, 9034140), (10, 8130726), (12, 6775605), (15, 5420484), (17, 4782780), (18, 4517070), (20, 4065363), (27, 3011380), (30, 2710242), (34, 2391390), (36, 2258535), (45, 1806828), (51, 1594260), (54, 1505690), (60, 1355121), (68, 1195695), (85, 956556), (90, 903414), (102, 797130), (108, 752845), (135, 602276), (153, 531420), (170, 478278), (180, 451707), (204, 398565), (255, 318852), (270, 301138), (289, 281340), (306, 265710), (340, 239139), (459, 177140), (510, 159426), (521, 156060), (540, 150569), (578, 140670), (612, 132855), (765, 106284), (867, 93780), (918, 88570), (1020, 79713), (1042, 78030), (1156, 70335), (1445, 56268), (1530, 53142), (1563, 52020), (1734, 46890), (1836, 44285), (2084, 39015), (2295, 35428), (2601, 31260), (2605, 31212), (2890, 28134), (3060, 26571), (3126, 26010), (3468, 23445), (4335, 18756), (4590, 17714), (4689, 17340), (5202, 15630), (5210, 15606), (5780, 14067), (6252, 13005), (7803, 10420), (7815, 10404), (8670, 9378), (8857, 9180)]