21451088

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{821}}^1$

素因数の和:923

約数の個数: 40

約数和(自身を含む): 44032896

約数和(自身を除く): 22581808

約数列:

[1, 2, 4, 8, 16, 23, 46, 71, 92, 142, 184, 284, 368, 568, 821, 1136, 1633, 1642, 3266, 3284, 6532, 6568, 13064, 13136, 18883, 26128, 37766, 58291, 75532, 116582, 151064, 233164, 302128, 466328, 932656, 1340693, 2681386, 5362772, 10725544, 21451088]

約数ペア:

[(1, 21451088), (2, 10725544), (4, 5362772), (8, 2681386), (16, 1340693), (23, 932656), (46, 466328), (71, 302128), (92, 233164), (142, 151064), (184, 116582), (284, 75532), (368, 58291), (568, 37766), (821, 26128), (1136, 18883), (1633, 13136), (1642, 13064), (3266, 6568), (3284, 6532)]