20992725

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7177}}^1$

素因数の和:7206

約数の個数: 36

約数和(自身を含む): 40498276

約数和(自身を除く): 19505551

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7177, 21531, 35885, 64593, 93301, 107655, 179425, 279903, 322965, 466505, 538275, 839709, 1399515, 1614825, 2332525, 4198545, 6997575, 20992725]

約数ペア:

[(1, 20992725), (3, 6997575), (5, 4198545), (9, 2332525), (13, 1614825), (15, 1399515), (25, 839709), (39, 538275), (45, 466505), (65, 322965), (75, 279903), (117, 179425), (195, 107655), (225, 93301), (325, 64593), (585, 35885), (975, 21531), (2925, 7177)]