25865180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1321}}^1$

素因数の和:1430

約数の個数: 48

約数和(自身を含む): 59965920

約数和(自身を除く): 34100740

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1321, 1780, 1958, 2642, 3916, 4895, 5284, 6605, 9790, 13210, 14531, 19580, 26420, 29062, 58124, 72655, 117569, 145310, 235138, 290620, 470276, 587845, 1175690, 1293259, 2351380, 2586518, 5173036, 6466295, 12932590, 25865180]

約数ペア:

[(1, 25865180), (2, 12932590), (4, 6466295), (5, 5173036), (10, 2586518), (11, 2351380), (20, 1293259), (22, 1175690), (44, 587845), (55, 470276), (89, 290620), (110, 235138), (178, 145310), (220, 117569), (356, 72655), (445, 58124), (890, 29062), (979, 26420), (1321, 19580), (1780, 14531), (1958, 13210), (2642, 9790), (3916, 6605), (4895, 5284)]