400661875

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{9029}}^1$

素因数の和:9120

約数の個数: 20

約数和(自身を含む): 507774960

約数和(自身を除く): 107113085

約数列:

[1, 5, 25, 71, 125, 355, 625, 1775, 8875, 9029, 44375, 45145, 225725, 641059, 1128625, 3205295, 5643125, 16026475, 80132375, 400661875]

約数ペア:

[(1, 400661875), (5, 80132375), (25, 16026475), (71, 5643125), (125, 3205295), (355, 1128625), (625, 641059), (1775, 225725), (8875, 45145), (9029, 44375)]