15775820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{193}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 34351968

約数和(自身を除く): 18576148

約数列:

[1, 2, 4, 5, 10, 20, 61, 67, 122, 134, 193, 244, 268, 305, 335, 386, 610, 670, 772, 965, 1220, 1340, 1930, 3860, 4087, 8174, 11773, 12931, 16348, 20435, 23546, 25862, 40870, 47092, 51724, 58865, 64655, 81740, 117730, 129310, 235460, 258620, 788791, 1577582, 3155164, 3943955, 7887910, 15775820]

約数ペア:

[(1, 15775820), (2, 7887910), (4, 3943955), (5, 3155164), (10, 1577582), (20, 788791), (61, 258620), (67, 235460), (122, 129310), (134, 117730), (193, 81740), (244, 64655), (268, 58865), (305, 51724), (335, 47092), (386, 40870), (610, 25862), (670, 23546), (772, 20435), (965, 16348), (1220, 12931), (1340, 11773), (1930, 8174), (3860, 4087)]