685036820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{12487}}^1$

素因数の和:12720

約数の個数: 48

約数和(自身を含む): 1556704128

約数和(自身を除く): 871667308

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 211, 260, 422, 844, 1055, 2110, 2743, 4220, 5486, 10972, 12487, 13715, 24974, 27430, 49948, 54860, 62435, 124870, 162331, 249740, 324662, 649324, 811655, 1623310, 2634757, 3246620, 5269514, 10539028, 13173785, 26347570, 34251841, 52695140, 68503682, 137007364, 171259205, 342518410, 685036820]

約数ペア:

[(1, 685036820), (2, 342518410), (4, 171259205), (5, 137007364), (10, 68503682), (13, 52695140), (20, 34251841), (26, 26347570), (52, 13173785), (65, 10539028), (130, 5269514), (211, 3246620), (260, 2634757), (422, 1623310), (844, 811655), (1055, 649324), (2110, 324662), (2743, 249740), (4220, 162331), (5486, 124870), (10972, 62435), (12487, 54860), (13715, 49948), (24974, 27430)]