20653425

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:359

約数の個数: 72

約数和(自身を含む): 41705664

約数和(自身を除く): 21052239

約数列:

[1, 3, 5, 9, 13, 15, 23, 25, 39, 45, 65, 69, 75, 115, 117, 195, 207, 225, 299, 307, 325, 345, 575, 585, 897, 921, 975, 1035, 1495, 1535, 1725, 2691, 2763, 2925, 3991, 4485, 4605, 5175, 7061, 7475, 7675, 11973, 13455, 13815, 19955, 21183, 22425, 23025, 35305, 35919, 59865, 63549, 67275, 69075, 91793, 99775, 105915, 176525, 179595, 275379, 299325, 317745, 458965, 529575, 826137, 897975, 1376895, 1588725, 2294825, 4130685, 6884475, 20653425]

約数ペア:

[(1, 20653425), (3, 6884475), (5, 4130685), (9, 2294825), (13, 1588725), (15, 1376895), (23, 897975), (25, 826137), (39, 529575), (45, 458965), (65, 317745), (69, 299325), (75, 275379), (115, 179595), (117, 176525), (195, 105915), (207, 99775), (225, 91793), (299, 69075), (307, 67275), (325, 63549), (345, 59865), (575, 35919), (585, 35305), (897, 23025), (921, 22425), (975, 21183), (1035, 19955), (1495, 13815), (1535, 13455), (1725, 11973), (2691, 7675), (2763, 7475), (2925, 7061), (3991, 5175), (4485, 4605)]