64997440

素因数分解:

$2^6\times 5^1\times {\mathrm{203117}}^1$

素因数の和:203134

約数の個数: 28

約数和(自身を含む): 154775916

約数和(自身を除く): 89778476

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 203117, 406234, 812468, 1015585, 1624936, 2031170, 3249872, 4062340, 6499744, 8124680, 12999488, 16249360, 32498720, 64997440]

約数ペア:

[(1, 64997440), (2, 32498720), (4, 16249360), (5, 12999488), (8, 8124680), (10, 6499744), (16, 4062340), (20, 3249872), (32, 2031170), (40, 1624936), (64, 1015585), (80, 812468), (160, 406234), (320, 203117)]