81916640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39383}}^1$

素因数の和:39411

約数の個数: 48

約数和(自身を含む): 208420128

約数和(自身を除く): 126503488

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39383, 78766, 157532, 196915, 315064, 393830, 511979, 630128, 787660, 1023958, 1260256, 1575320, 2047916, 2559895, 3150640, 4095832, 5119790, 6301280, 8191664, 10239580, 16383328, 20479160, 40958320, 81916640]

約数ペア:

[(1, 81916640), (2, 40958320), (4, 20479160), (5, 16383328), (8, 10239580), (10, 8191664), (13, 6301280), (16, 5119790), (20, 4095832), (26, 3150640), (32, 2559895), (40, 2047916), (52, 1575320), (65, 1260256), (80, 1023958), (104, 787660), (130, 630128), (160, 511979), (208, 393830), (260, 315064), (416, 196915), (520, 157532), (1040, 78766), (2080, 39383)]