12688720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{14419}}^1$

素因数の和:14443

約数の個数: 40

約数和(自身を含む): 32185440

約数和(自身を除く): 19496720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 14419, 28838, 57676, 72095, 115352, 144190, 158609, 230704, 288380, 317218, 576760, 634436, 793045, 1153520, 1268872, 1586090, 2537744, 3172180, 6344360, 12688720]

約数ペア:

[(1, 12688720), (2, 6344360), (4, 3172180), (5, 2537744), (8, 1586090), (10, 1268872), (11, 1153520), (16, 793045), (20, 634436), (22, 576760), (40, 317218), (44, 288380), (55, 230704), (80, 158609), (88, 144190), (110, 115352), (176, 72095), (220, 57676), (440, 28838), (880, 14419)]