31990010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{823}}^1$

素因数の和:879

約数の個数: 48

約数和(自身を含む): 65142144

約数和(自身を除く): 33152134

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 169, 230, 299, 338, 598, 823, 845, 1495, 1646, 1690, 2990, 3887, 4115, 7774, 8230, 10699, 18929, 19435, 21398, 37858, 38870, 53495, 94645, 106990, 139087, 189290, 246077, 278174, 492154, 695435, 1230385, 1390870, 2460770, 3199001, 6398002, 15995005, 31990010]

約数ペア:

[(1, 31990010), (2, 15995005), (5, 6398002), (10, 3199001), (13, 2460770), (23, 1390870), (26, 1230385), (46, 695435), (65, 492154), (115, 278174), (130, 246077), (169, 189290), (230, 139087), (299, 106990), (338, 94645), (598, 53495), (823, 38870), (845, 37858), (1495, 21398), (1646, 19435), (1690, 18929), (2990, 10699), (3887, 8230), (4115, 7774)]