253661720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{487811}}^1$

素因数の和:487835

約数の個数: 32

約数和(自身を含む): 614643120

約数和(自身を除く): 360981400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 487811, 975622, 1951244, 2439055, 3902488, 4878110, 6341543, 9756220, 12683086, 19512440, 25366172, 31707715, 50732344, 63415430, 126830860, 253661720]

約数ペア:

[(1, 253661720), (2, 126830860), (4, 63415430), (5, 50732344), (8, 31707715), (10, 25366172), (13, 19512440), (20, 12683086), (26, 9756220), (40, 6341543), (52, 4878110), (65, 3902488), (104, 2439055), (130, 1951244), (260, 975622), (520, 487811)]