261561860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{13441}}^1$

素因数の和:13596

約数の個数: 48

約数和(自身を含む): 632311680

約数和(自身を除く): 370749820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 13441, 19460, 26882, 53764, 67205, 94087, 134410, 188174, 268820, 376348, 470435, 940870, 1868299, 1881740, 3736598, 7473196, 9341495, 13078093, 18682990, 26156186, 37365980, 52312372, 65390465, 130780930, 261561860]

約数ペア:

[(1, 261561860), (2, 130780930), (4, 65390465), (5, 52312372), (7, 37365980), (10, 26156186), (14, 18682990), (20, 13078093), (28, 9341495), (35, 7473196), (70, 3736598), (139, 1881740), (140, 1868299), (278, 940870), (556, 470435), (695, 376348), (973, 268820), (1390, 188174), (1946, 134410), (2780, 94087), (3892, 67205), (4865, 53764), (9730, 26882), (13441, 19460)]