81218720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{46147}}^1$

素因数の和:46173

約数の個数: 48

約数和(自身を含む): 209327328

約数和(自身を除く): 128108608

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 46147, 92294, 184588, 230735, 369176, 461470, 507617, 738352, 922940, 1015234, 1476704, 1845880, 2030468, 2538085, 3691760, 4060936, 5076170, 7383520, 8121872, 10152340, 16243744, 20304680, 40609360, 81218720]

約数ペア:

[(1, 81218720), (2, 40609360), (4, 20304680), (5, 16243744), (8, 10152340), (10, 8121872), (11, 7383520), (16, 5076170), (20, 4060936), (22, 3691760), (32, 2538085), (40, 2030468), (44, 1845880), (55, 1476704), (80, 1015234), (88, 922940), (110, 738352), (160, 507617), (176, 461470), (220, 369176), (352, 230735), (440, 184588), (880, 92294), (1760, 46147)]