21625808

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8609}}^1$

素因数の和:8774

約数の個数: 20

約数和(自身を含む): 42171780

約数和(自身を除く): 20545972

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8609, 17218, 34436, 68872, 137744, 1351613, 2703226, 5406452, 10812904, 21625808]

約数ペア:

[(1, 21625808), (2, 10812904), (4, 5406452), (8, 2703226), (16, 1351613), (157, 137744), (314, 68872), (628, 34436), (1256, 17218), (2512, 8609)]