21289125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 41723136

約数和(自身を除く): 20434011

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 125, 143, 165, 195, 275, 325, 375, 397, 429, 715, 825, 975, 1191, 1375, 1625, 1985, 2145, 3575, 4125, 4367, 4875, 5161, 5955, 9925, 10725, 13101, 15483, 17875, 21835, 25805, 29775, 49625, 53625, 56771, 65505, 77415, 109175, 129025, 148875, 170313, 283855, 327525, 387075, 545875, 645125, 851565, 1419275, 1637625, 1935375, 4257825, 7096375, 21289125]

約数ペア:

[(1, 21289125), (3, 7096375), (5, 4257825), (11, 1935375), (13, 1637625), (15, 1419275), (25, 851565), (33, 645125), (39, 545875), (55, 387075), (65, 327525), (75, 283855), (125, 170313), (143, 148875), (165, 129025), (195, 109175), (275, 77415), (325, 65505), (375, 56771), (397, 53625), (429, 49625), (715, 29775), (825, 25805), (975, 21835), (1191, 17875), (1375, 15483), (1625, 13101), (1985, 10725), (2145, 9925), (3575, 5955), (4125, 5161), (4367, 4875)]