18243280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20731}}^1$

素因数の和:20755

約数の個数: 40

約数和(自身を含む): 46273824

約数和(自身を除く): 28030544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20731, 41462, 82924, 103655, 165848, 207310, 228041, 331696, 414620, 456082, 829240, 912164, 1140205, 1658480, 1824328, 2280410, 3648656, 4560820, 9121640, 18243280]

約数ペア:

[(1, 18243280), (2, 9121640), (4, 4560820), (5, 3648656), (8, 2280410), (10, 1824328), (11, 1658480), (16, 1140205), (20, 912164), (22, 829240), (40, 456082), (44, 414620), (55, 331696), (80, 228041), (88, 207310), (110, 165848), (176, 103655), (220, 82924), (440, 41462), (880, 20731)]