21491672

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4271}}^1$

素因数の和:4331

約数の個数: 32

約数和(自身を含む): 43830720

約数和(自身を除く): 22339048

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 296, 629, 1258, 2516, 4271, 5032, 8542, 17084, 34168, 72607, 145214, 158027, 290428, 316054, 580856, 632108, 1264216, 2686459, 5372918, 10745836, 21491672]

約数ペア:

[(1, 21491672), (2, 10745836), (4, 5372918), (8, 2686459), (17, 1264216), (34, 632108), (37, 580856), (68, 316054), (74, 290428), (136, 158027), (148, 145214), (296, 72607), (629, 34168), (1258, 17084), (2516, 8542), (4271, 5032)]