20975685

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 14167995

約数列:

[1, 3, 5, 15, 31, 79, 93, 155, 237, 395, 465, 571, 1185, 1713, 2449, 2855, 7347, 8565, 12245, 17701, 36735, 45109, 53103, 88505, 135327, 225545, 265515, 676635, 1398379, 4195137, 6991895, 20975685]

約数ペア:

[(1, 20975685), (3, 6991895), (5, 4195137), (15, 1398379), (31, 676635), (79, 265515), (93, 225545), (155, 135327), (237, 88505), (395, 53103), (465, 45109), (571, 36735), (1185, 17701), (1713, 12245), (2449, 8565), (2855, 7347)]