18716625

素因数分解:

$3^2\times 5^3\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 34265088

約数和(自身を除く): 15548463

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 127, 131, 225, 375, 381, 393, 635, 655, 1125, 1143, 1179, 1905, 1965, 3175, 3275, 5715, 5895, 9525, 9825, 15875, 16375, 16637, 28575, 29475, 47625, 49125, 49911, 83185, 142875, 147375, 149733, 249555, 415925, 748665, 1247775, 2079625, 3743325, 6238875, 18716625]

約数ペア:

[(1, 18716625), (3, 6238875), (5, 3743325), (9, 2079625), (15, 1247775), (25, 748665), (45, 415925), (75, 249555), (125, 149733), (127, 147375), (131, 142875), (225, 83185), (375, 49911), (381, 49125), (393, 47625), (635, 29475), (655, 28575), (1125, 16637), (1143, 16375), (1179, 15875), (1905, 9825), (1965, 9525), (3175, 5895), (3275, 5715)]