641250975

素因数分解:

$3^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{353}}^1\times {\mathrm{457}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 1085635872

約数和(自身を除く): 444384897

約数列:

[1, 3, 5, 15, 25, 53, 75, 159, 265, 353, 457, 795, 1059, 1325, 1371, 1765, 2285, 3975, 5295, 6855, 8825, 11425, 18709, 24221, 26475, 34275, 56127, 72663, 93545, 121105, 161321, 280635, 363315, 467725, 483963, 605525, 806605, 1403175, 1816575, 2419815, 4033025, 8550013, 12099075, 25650039, 42750065, 128250195, 213750325, 641250975]

約数ペア:

[(1, 641250975), (3, 213750325), (5, 128250195), (15, 42750065), (25, 25650039), (53, 12099075), (75, 8550013), (159, 4033025), (265, 2419815), (353, 1816575), (457, 1403175), (795, 806605), (1059, 605525), (1325, 483963), (1371, 467725), (1765, 363315), (2285, 280635), (3975, 161321), (5295, 121105), (6855, 93545), (8825, 72663), (11425, 56127), (18709, 34275), (24221, 26475)]