65400680

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{19699}}^1$

素因数の和:19793

約数の個数: 32

約数和(自身を含む): 148932000

約数和(自身を除く): 83531320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 19699, 39398, 78796, 98495, 157592, 196990, 393980, 787960, 1635017, 3270034, 6540068, 8175085, 13080136, 16350170, 32700340, 65400680]

約数ペア:

[(1, 65400680), (2, 32700340), (4, 16350170), (5, 13080136), (8, 8175085), (10, 6540068), (20, 3270034), (40, 1635017), (83, 787960), (166, 393980), (332, 196990), (415, 157592), (664, 98495), (830, 78796), (1660, 39398), (3320, 19699)]