20787340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4013}}^1$

素因数の和:4066

約数の個数: 48

約数和(自身を含む): 51250752

約数和(自身を除く): 30463412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4013, 5180, 8026, 16052, 20065, 28091, 40130, 56182, 80260, 112364, 140455, 148481, 280910, 296962, 561820, 593924, 742405, 1039367, 1484810, 2078734, 2969620, 4157468, 5196835, 10393670, 20787340]

約数ペア:

[(1, 20787340), (2, 10393670), (4, 5196835), (5, 4157468), (7, 2969620), (10, 2078734), (14, 1484810), (20, 1039367), (28, 742405), (35, 593924), (37, 561820), (70, 296962), (74, 280910), (140, 148481), (148, 140455), (185, 112364), (259, 80260), (370, 56182), (518, 40130), (740, 28091), (1036, 20065), (1295, 16052), (2590, 8026), (4013, 5180)]