20620875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{4999}}^1$

素因数の和:5028

約数の個数: 32

約数和(自身を含む): 37440000

約数和(自身を除く): 16819125

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 825, 1375, 4125, 4999, 14997, 24995, 54989, 74985, 124975, 164967, 274945, 374925, 624875, 824835, 1374725, 1874625, 4124175, 6873625, 20620875]

約数ペア:

[(1, 20620875), (3, 6873625), (5, 4124175), (11, 1874625), (15, 1374725), (25, 824835), (33, 624875), (55, 374925), (75, 274945), (125, 164967), (165, 124975), (275, 74985), (375, 54989), (825, 24995), (1375, 14997), (4125, 4999)]