2561860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{631}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 6370560

約数和(自身を除く): 3808700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 631, 812, 1015, 1262, 2030, 2524, 3155, 4060, 4417, 6310, 8834, 12620, 17668, 18299, 22085, 36598, 44170, 73196, 88340, 91495, 128093, 182990, 256186, 365980, 512372, 640465, 1280930, 2561860]

約数ペア:

[(1, 2561860), (2, 1280930), (4, 640465), (5, 512372), (7, 365980), (10, 256186), (14, 182990), (20, 128093), (28, 91495), (29, 88340), (35, 73196), (58, 44170), (70, 36598), (116, 22085), (140, 18299), (145, 17668), (203, 12620), (290, 8834), (406, 6310), (580, 4417), (631, 4060), (812, 3155), (1015, 2524), (1262, 2030)]