1640474420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6309517}}^1$

素因数の和:6309539

約数の個数: 24

約数和(自身を含む): 3709996584

約数和(自身を除く): 2069522164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 6309517, 12619034, 25238068, 31547585, 63095170, 82023721, 126190340, 164047442, 328094884, 410118605, 820237210, 1640474420]

約数ペア:

[(1, 1640474420), (2, 820237210), (4, 410118605), (5, 328094884), (10, 164047442), (13, 126190340), (20, 82023721), (26, 63095170), (52, 31547585), (65, 25238068), (130, 12619034), (260, 6309517)]