64849460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249421}}^1$

素因数の和:249443

約数の個数: 24

約数和(自身を含む): 146660136

約数和(自身を除く): 81810676

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 249421, 498842, 997684, 1247105, 2494210, 3242473, 4988420, 6484946, 12969892, 16212365, 32424730, 64849460]

約数ペア:

[(1, 64849460), (2, 32424730), (4, 16212365), (5, 12969892), (10, 6484946), (13, 4988420), (20, 3242473), (26, 2494210), (52, 1247105), (65, 997684), (130, 498842), (260, 249421)]