7780400

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:438

約数の個数: 60

約数和(自身を含む): 19096992

約数和(自身を除く): 11316592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 367, 400, 424, 530, 734, 848, 1060, 1325, 1468, 1835, 2120, 2650, 2936, 3670, 4240, 5300, 5872, 7340, 9175, 10600, 14680, 18350, 19451, 21200, 29360, 36700, 38902, 73400, 77804, 97255, 146800, 155608, 194510, 311216, 389020, 486275, 778040, 972550, 1556080, 1945100, 3890200, 7780400]

約数ペア:

[(1, 7780400), (2, 3890200), (4, 1945100), (5, 1556080), (8, 972550), (10, 778040), (16, 486275), (20, 389020), (25, 311216), (40, 194510), (50, 155608), (53, 146800), (80, 97255), (100, 77804), (106, 73400), (200, 38902), (212, 36700), (265, 29360), (367, 21200), (400, 19451), (424, 18350), (530, 14680), (734, 10600), (848, 9175), (1060, 7340), (1325, 5872), (1468, 5300), (1835, 4240), (2120, 3670), (2650, 2936)]