64945840

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{9781}}^1$

素因数の和:9877

約数の個数: 40

約数和(自身を含む): 152833968

約数和(自身を除く): 87888128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3320, 6640, 9781, 19562, 39124, 48905, 78248, 97810, 156496, 195620, 391240, 782480, 811823, 1623646, 3247292, 4059115, 6494584, 8118230, 12989168, 16236460, 32472920, 64945840]

約数ペア:

[(1, 64945840), (2, 32472920), (4, 16236460), (5, 12989168), (8, 8118230), (10, 6494584), (16, 4059115), (20, 3247292), (40, 1623646), (80, 811823), (83, 782480), (166, 391240), (332, 195620), (415, 156496), (664, 97810), (830, 78248), (1328, 48905), (1660, 39124), (3320, 19562), (6640, 9781)]