21310367775

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{4001947}}^1$

素因数の和:4002031

約数の個数: 24

約数和(自身を含む): 35729391744

約数和(自身を除く): 14419023969

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 5325, 4001947, 12005841, 20009735, 60029205, 100048675, 284138237, 300146025, 852414711, 1420691185, 4262073555, 7103455925, 21310367775]

約数ペア:

[(1, 21310367775), (3, 7103455925), (5, 4262073555), (15, 1420691185), (25, 852414711), (71, 300146025), (75, 284138237), (213, 100048675), (355, 60029205), (1065, 20009735), (1775, 12005841), (5325, 4001947)]