18971685

素因数分解:

$3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1579}}^1$

素因数の和:1682

約数の個数: 32

約数和(自身を含む): 34128000

約数和(自身を除く): 15156315

約数列:

[1, 3, 5, 9, 15, 27, 45, 89, 135, 267, 445, 801, 1335, 1579, 2403, 4005, 4737, 7895, 12015, 14211, 23685, 42633, 71055, 140531, 213165, 421593, 702655, 1264779, 2107965, 3794337, 6323895, 18971685]

約数ペア:

[(1, 18971685), (3, 6323895), (5, 3794337), (9, 2107965), (15, 1264779), (27, 702655), (45, 421593), (89, 213165), (135, 140531), (267, 71055), (445, 42633), (801, 23685), (1335, 14211), (1579, 12015), (2403, 7895), (4005, 4737)]