20561936

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{739}}^1$

素因数の和:831

約数の個数: 40

約数和(自身を含む): 41842560

約数和(自身を除く): 21280624

約数列:

[1, 2, 4, 8, 16, 37, 47, 74, 94, 148, 188, 296, 376, 592, 739, 752, 1478, 1739, 2956, 3478, 5912, 6956, 11824, 13912, 27343, 27824, 34733, 54686, 69466, 109372, 138932, 218744, 277864, 437488, 555728, 1285121, 2570242, 5140484, 10280968, 20561936]

約数ペア:

[(1, 20561936), (2, 10280968), (4, 5140484), (8, 2570242), (16, 1285121), (37, 555728), (47, 437488), (74, 277864), (94, 218744), (148, 138932), (188, 109372), (296, 69466), (376, 54686), (592, 34733), (739, 27824), (752, 27343), (1478, 13912), (1739, 11824), (2956, 6956), (3478, 5912)]