21823720

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5099}}^1$

素因数の和:5217

約数の個数: 32

約数和(自身を含む): 49572000

約数和(自身を除く): 27748280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5099, 10198, 20396, 25495, 40792, 50990, 101980, 203960, 545593, 1091186, 2182372, 2727965, 4364744, 5455930, 10911860, 21823720]

約数ペア:

[(1, 21823720), (2, 10911860), (4, 5455930), (5, 4364744), (8, 2727965), (10, 2182372), (20, 1091186), (40, 545593), (107, 203960), (214, 101980), (428, 50990), (535, 40792), (856, 25495), (1070, 20396), (2140, 10198), (4280, 5099)]