21554325

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7369}}^1$

素因数の和:7398

約数の個数: 36

約数和(自身を含む): 41581540

約数和(自身を除く): 20027215

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7369, 22107, 36845, 66321, 95797, 110535, 184225, 287391, 331605, 478985, 552675, 862173, 1436955, 1658025, 2394925, 4310865, 7184775, 21554325]

約数ペア:

[(1, 21554325), (3, 7184775), (5, 4310865), (9, 2394925), (13, 1658025), (15, 1436955), (25, 862173), (39, 552675), (45, 478985), (65, 331605), (75, 287391), (117, 184225), (195, 110535), (225, 95797), (325, 66321), (585, 36845), (975, 22107), (2925, 7369)]