688464140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{378277}}^1$

素因数の和:378306

約数の個数: 48

約数和(自身を含む): 1779419712

約数和(自身を除く): 1090955572

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 378277, 756554, 1513108, 1891385, 2647939, 3782770, 4917601, 5295878, 7565540, 9835202, 10591756, 13239695, 19670404, 24588005, 26479390, 34423207, 49176010, 52958780, 68846414, 98352020, 137692828, 172116035, 344232070, 688464140]

約数ペア:

[(1, 688464140), (2, 344232070), (4, 172116035), (5, 137692828), (7, 98352020), (10, 68846414), (13, 52958780), (14, 49176010), (20, 34423207), (26, 26479390), (28, 24588005), (35, 19670404), (52, 13239695), (65, 10591756), (70, 9835202), (91, 7565540), (130, 5295878), (140, 4917601), (182, 3782770), (260, 2647939), (364, 1891385), (455, 1513108), (910, 756554), (1820, 378277)]