20284714840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{74021}}^1$

素因数の和:74093

約数の個数: 128

約数和(自身を含む): 53722206720

約数和(自身を除く): 33437491880

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 31, 34, 40, 52, 62, 65, 68, 85, 104, 124, 130, 136, 155, 170, 221, 248, 260, 310, 340, 403, 442, 520, 527, 620, 680, 806, 884, 1054, 1105, 1240, 1612, 1768, 2015, 2108, 2210, 2635, 3224, 4030, 4216, 4420, 5270, 6851, 8060, 8840, 10540, 13702, 16120, 21080, 27404, 34255, 54808, 68510, 74021, 137020, 148042, 274040, 296084, 370105, 592168, 740210, 962273, 1258357, 1480420, 1924546, 2294651, 2516714, 2960840, 3849092, 4589302, 4811365, 5033428, 6291785, 7698184, 9178604, 9622730, 10066856, 11473255, 12583570, 16358641, 18357208, 19245460, 22946510, 25167140, 29830463, 32717282, 38490920, 39009067, 45893020, 50334280, 59660926, 65434564, 78018134, 81793205, 91786040, 119321852, 130869128, 149152315, 156036268, 163586410, 195045335, 238643704, 298304630, 312072536, 327172820, 390090670, 507117871, 596609260, 654345640, 780181340, 1014235742, 1193218520, 1560362680, 2028471484, 2535589355, 4056942968, 5071178710, 10142357420, 20284714840]

約数ペア:

[(1, 20284714840), (2, 10142357420), (4, 5071178710), (5, 4056942968), (8, 2535589355), (10, 2028471484), (13, 1560362680), (17, 1193218520), (20, 1014235742), (26, 780181340), (31, 654345640), (34, 596609260), (40, 507117871), (52, 390090670), (62, 327172820), (65, 312072536), (68, 298304630), (85, 238643704), (104, 195045335), (124, 163586410), (130, 156036268), (136, 149152315), (155, 130869128), (170, 119321852), (221, 91786040), (248, 81793205), (260, 78018134), (310, 65434564), (340, 59660926), (403, 50334280), (442, 45893020), (520, 39009067), (527, 38490920), (620, 32717282), (680, 29830463), (806, 25167140), (884, 22946510), (1054, 19245460), (1105, 18357208), (1240, 16358641), (1612, 12583570), (1768, 11473255), (2015, 10066856), (2108, 9622730), (2210, 9178604), (2635, 7698184), (3224, 6291785), (4030, 5033428), (4216, 4811365), (4420, 4589302), (5270, 3849092), (6851, 2960840), (8060, 2516714), (8840, 2294651), (10540, 1924546), (13702, 1480420), (16120, 1258357), (21080, 962273), (27404, 740210), (34255, 592168), (54808, 370105), (68510, 296084), (74021, 274040), (137020, 148042)]