251131920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80491}}^1$

素因数の和:80520

約数の個数: 80

約数和(自身を含む): 838404672

約数和(自身を除く): 587272752

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 80491, 160982, 241473, 321964, 402455, 482946, 643928, 804910, 965892, 1046383, 1207365, 1287856, 1609820, 1931784, 2092766, 2414730, 3139149, 3219640, 3863568, 4185532, 4829460, 5231915, 6278298, 6439280, 8371064, 9658920, 10463830, 12556596, 15695745, 16742128, 19317840, 20927660, 25113192, 31391490, 41855320, 50226384, 62782980, 83710640, 125565960, 251131920]

約数ペア:

[(1, 251131920), (2, 125565960), (3, 83710640), (4, 62782980), (5, 50226384), (6, 41855320), (8, 31391490), (10, 25113192), (12, 20927660), (13, 19317840), (15, 16742128), (16, 15695745), (20, 12556596), (24, 10463830), (26, 9658920), (30, 8371064), (39, 6439280), (40, 6278298), (48, 5231915), (52, 4829460), (60, 4185532), (65, 3863568), (78, 3219640), (80, 3139149), (104, 2414730), (120, 2092766), (130, 1931784), (156, 1609820), (195, 1287856), (208, 1207365), (240, 1046383), (260, 965892), (312, 804910), (390, 643928), (520, 482946), (624, 402455), (780, 321964), (1040, 241473), (1560, 160982), (3120, 80491)]