21375280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11617}}^1$

素因数の和:11653

約数の個数: 40

約数和(自身を含む): 51862752

約数和(自身を除く): 30487472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11617, 23234, 46468, 58085, 92936, 116170, 185872, 232340, 267191, 464680, 534382, 929360, 1068764, 1335955, 2137528, 2671910, 4275056, 5343820, 10687640, 21375280]

約数ペア:

[(1, 21375280), (2, 10687640), (4, 5343820), (5, 4275056), (8, 2671910), (10, 2137528), (16, 1335955), (20, 1068764), (23, 929360), (40, 534382), (46, 464680), (80, 267191), (92, 232340), (115, 185872), (184, 116170), (230, 92936), (368, 58085), (460, 46468), (920, 23234), (1840, 11617)]