51438920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3191}}^1$

素因数の和:3246

約数の個数: 64

約数和(自身を含む): 128701440

約数和(自身を除く): 77262520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 2015, 3191, 3224, 4030, 6382, 8060, 12764, 15955, 16120, 25528, 31910, 41483, 63820, 82966, 98921, 127640, 165932, 197842, 207415, 331864, 395684, 414830, 494605, 791368, 829660, 989210, 1285973, 1659320, 1978420, 2571946, 3956840, 5143892, 6429865, 10287784, 12859730, 25719460, 51438920]

約数ペア:

[(1, 51438920), (2, 25719460), (4, 12859730), (5, 10287784), (8, 6429865), (10, 5143892), (13, 3956840), (20, 2571946), (26, 1978420), (31, 1659320), (40, 1285973), (52, 989210), (62, 829660), (65, 791368), (104, 494605), (124, 414830), (130, 395684), (155, 331864), (248, 207415), (260, 197842), (310, 165932), (403, 127640), (520, 98921), (620, 82966), (806, 63820), (1240, 41483), (1612, 31910), (2015, 25528), (3191, 16120), (3224, 15955), (4030, 12764), (6382, 8060)]