18013875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^2\times {\mathrm{397}}^1$

素因数の和:437

約数の個数: 48

約数和(自身を含む): 33030816

約数和(自身を除く): 15016941

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 125, 165, 275, 363, 375, 397, 605, 825, 1191, 1375, 1815, 1985, 3025, 4125, 4367, 5955, 9075, 9925, 13101, 15125, 21835, 29775, 45375, 48037, 49625, 65505, 109175, 144111, 148875, 240185, 327525, 545875, 720555, 1200925, 1637625, 3602775, 6004625, 18013875]

約数ペア:

[(1, 18013875), (3, 6004625), (5, 3602775), (11, 1637625), (15, 1200925), (25, 720555), (33, 545875), (55, 327525), (75, 240185), (121, 148875), (125, 144111), (165, 109175), (275, 65505), (363, 49625), (375, 48037), (397, 45375), (605, 29775), (825, 21835), (1191, 15125), (1375, 13101), (1815, 9925), (1985, 9075), (3025, 5955), (4125, 4367)]