20145350

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 39747456

約数和(自身を除く): 19602106

約数列:

[1, 2, 5, 10, 25, 31, 41, 50, 62, 82, 155, 205, 310, 317, 410, 634, 775, 1025, 1271, 1550, 1585, 2050, 2542, 3170, 6355, 7925, 9827, 12710, 12997, 15850, 19654, 25994, 31775, 49135, 63550, 64985, 98270, 129970, 245675, 324925, 402907, 491350, 649850, 805814, 2014535, 4029070, 10072675, 20145350]

約数ペア:

[(1, 20145350), (2, 10072675), (5, 4029070), (10, 2014535), (25, 805814), (31, 649850), (41, 491350), (50, 402907), (62, 324925), (82, 245675), (155, 129970), (205, 98270), (310, 64985), (317, 63550), (410, 49135), (634, 31775), (775, 25994), (1025, 19654), (1271, 15850), (1550, 12997), (1585, 12710), (2050, 9827), (2542, 7925), (3170, 6355)]