20680010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{587}}^1$

素因数の和:878

約数の個数: 32

約数和(自身を含む): 40303872

約数和(自身を除く): 19623862

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 271, 542, 587, 1174, 1355, 2710, 2935, 3523, 5870, 7046, 7631, 15262, 17615, 35230, 38155, 76310, 159077, 318154, 795385, 1590770, 2068001, 4136002, 10340005, 20680010]

約数ペア:

[(1, 20680010), (2, 10340005), (5, 4136002), (10, 2068001), (13, 1590770), (26, 795385), (65, 318154), (130, 159077), (271, 76310), (542, 38155), (587, 35230), (1174, 17615), (1355, 15262), (2710, 7631), (2935, 7046), (3523, 5870)]