21138500125

素因数分解:

$5^3\times {\mathrm{53}}^1\times {\mathrm{839}}^1\times {\mathrm{3803}}^1$

素因数の和:4710

約数の個数: 32

約数和(自身を含む): 26917712640

約数和(自身を除く): 5779212515

約数列:

[1, 5, 25, 53, 125, 265, 839, 1325, 3803, 4195, 6625, 19015, 20975, 44467, 95075, 104875, 201559, 222335, 475375, 1007795, 1111675, 3190717, 5038975, 5558375, 15953585, 25194875, 79767925, 169108001, 398839625, 845540005, 4227700025, 21138500125]

約数ペア:

[(1, 21138500125), (5, 4227700025), (25, 845540005), (53, 398839625), (125, 169108001), (265, 79767925), (839, 25194875), (1325, 15953585), (3803, 5558375), (4195, 5038975), (6625, 3190717), (19015, 1111675), (20975, 1007795), (44467, 475375), (95075, 222335), (104875, 201559)]