253885970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{863}}^1$

素因数の和:987

約数の個数: 64

約数和(自身を含む): 515579904

約数和(自身を除く): 261693934

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 73, 130, 146, 155, 310, 365, 403, 730, 806, 863, 949, 1726, 1898, 2015, 2263, 4030, 4315, 4526, 4745, 8630, 9490, 11219, 11315, 22438, 22630, 26753, 29419, 53506, 56095, 58838, 62999, 112190, 125998, 133765, 147095, 267530, 294190, 314995, 347789, 629990, 695578, 818987, 1637974, 1738945, 1952969, 3477890, 3905938, 4094935, 8189870, 9764845, 19529690, 25388597, 50777194, 126942985, 253885970]

約数ペア:

[(1, 253885970), (2, 126942985), (5, 50777194), (10, 25388597), (13, 19529690), (26, 9764845), (31, 8189870), (62, 4094935), (65, 3905938), (73, 3477890), (130, 1952969), (146, 1738945), (155, 1637974), (310, 818987), (365, 695578), (403, 629990), (730, 347789), (806, 314995), (863, 294190), (949, 267530), (1726, 147095), (1898, 133765), (2015, 125998), (2263, 112190), (4030, 62999), (4315, 58838), (4526, 56095), (4745, 53506), (8630, 29419), (9490, 26753), (11219, 22630), (11315, 22438)]