20306825

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{137}}^1$

素因数の和:183

約数の個数: 54

約数和(自身を含む): 32431518

約数和(自身を除く): 12124693

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 121, 137, 175, 245, 275, 385, 539, 605, 685, 847, 959, 1225, 1507, 1925, 2695, 3025, 3425, 4235, 4795, 5929, 6713, 7535, 10549, 13475, 16577, 21175, 23975, 29645, 33565, 37675, 52745, 73843, 82885, 116039, 148225, 167825, 263725, 369215, 414425, 580195, 812273, 1846075, 2900975, 4061365, 20306825]

約数ペア:

[(1, 20306825), (5, 4061365), (7, 2900975), (11, 1846075), (25, 812273), (35, 580195), (49, 414425), (55, 369215), (77, 263725), (121, 167825), (137, 148225), (175, 116039), (245, 82885), (275, 73843), (385, 52745), (539, 37675), (605, 33565), (685, 29645), (847, 23975), (959, 21175), (1225, 16577), (1507, 13475), (1925, 10549), (2695, 7535), (3025, 6713), (3425, 5929), (4235, 4795)]