123900980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{2207}}^1$

素因数の和:2624

約数の個数: 48

約数和(自身を含む): 298238976

約数和(自身を除く): 174337996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 401, 802, 1604, 2005, 2207, 2807, 4010, 4414, 5614, 8020, 8828, 11035, 11228, 14035, 15449, 22070, 28070, 30898, 44140, 56140, 61796, 77245, 154490, 308980, 885007, 1770014, 3540028, 4425035, 6195049, 8850070, 12390098, 17700140, 24780196, 30975245, 61950490, 123900980]

約数ペア:

[(1, 123900980), (2, 61950490), (4, 30975245), (5, 24780196), (7, 17700140), (10, 12390098), (14, 8850070), (20, 6195049), (28, 4425035), (35, 3540028), (70, 1770014), (140, 885007), (401, 308980), (802, 154490), (1604, 77245), (2005, 61796), (2207, 56140), (2807, 44140), (4010, 30898), (4414, 28070), (5614, 22070), (8020, 15449), (8828, 14035), (11035, 11228)]