81011320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1877}}^1$

素因数の和:1984

約数の個数: 64

約数和(自身を含む): 198767520

約数和(自身を除く): 117756200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 83, 104, 130, 166, 260, 332, 415, 520, 664, 830, 1079, 1660, 1877, 2158, 3320, 3754, 4316, 5395, 7508, 8632, 9385, 10790, 15016, 18770, 21580, 24401, 37540, 43160, 48802, 75080, 97604, 122005, 155791, 195208, 244010, 311582, 488020, 623164, 778955, 976040, 1246328, 1557910, 2025283, 3115820, 4050566, 6231640, 8101132, 10126415, 16202264, 20252830, 40505660, 81011320]

約数ペア:

[(1, 81011320), (2, 40505660), (4, 20252830), (5, 16202264), (8, 10126415), (10, 8101132), (13, 6231640), (20, 4050566), (26, 3115820), (40, 2025283), (52, 1557910), (65, 1246328), (83, 976040), (104, 778955), (130, 623164), (166, 488020), (260, 311582), (332, 244010), (415, 195208), (520, 155791), (664, 122005), (830, 97604), (1079, 75080), (1660, 48802), (1877, 43160), (2158, 37540), (3320, 24401), (3754, 21580), (4316, 18770), (5395, 15016), (7508, 10790), (8632, 9385)]