81776560

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{6121}}^1$

素因数の和:6301

約数の個数: 40

約数和(自身を含む): 191300256

約数和(自身を除く): 109523696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1670, 2672, 3340, 6121, 6680, 12242, 13360, 24484, 30605, 48968, 61210, 97936, 122420, 244840, 489680, 1022207, 2044414, 4088828, 5111035, 8177656, 10222070, 16355312, 20444140, 40888280, 81776560]

約数ペア:

[(1, 81776560), (2, 40888280), (4, 20444140), (5, 16355312), (8, 10222070), (10, 8177656), (16, 5111035), (20, 4088828), (40, 2044414), (80, 1022207), (167, 489680), (334, 244840), (668, 122420), (835, 97936), (1336, 61210), (1670, 48968), (2672, 30605), (3340, 24484), (6121, 13360), (6680, 12242)]