81431360

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14969}}^1$

素因数の和:15003

約数の個数: 56

約数和(自身を含む): 205328520

約数和(自身を除く): 123897160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 5440, 14969, 29938, 59876, 74845, 119752, 149690, 239504, 254473, 299380, 479008, 508946, 598760, 958016, 1017892, 1197520, 1272365, 2035784, 2395040, 2544730, 4071568, 4790080, 5089460, 8143136, 10178920, 16286272, 20357840, 40715680, 81431360]

約数ペア:

[(1, 81431360), (2, 40715680), (4, 20357840), (5, 16286272), (8, 10178920), (10, 8143136), (16, 5089460), (17, 4790080), (20, 4071568), (32, 2544730), (34, 2395040), (40, 2035784), (64, 1272365), (68, 1197520), (80, 1017892), (85, 958016), (136, 598760), (160, 508946), (170, 479008), (272, 299380), (320, 254473), (340, 239504), (544, 149690), (680, 119752), (1088, 74845), (1360, 59876), (2720, 29938), (5440, 14969)]