19733500

素因数分解:

$2^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 24138692

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 125, 244, 250, 305, 500, 610, 647, 1220, 1294, 1525, 2588, 3050, 3235, 6100, 6470, 7625, 12940, 15250, 16175, 30500, 32350, 39467, 64700, 78934, 80875, 157868, 161750, 197335, 323500, 394670, 789340, 986675, 1973350, 3946700, 4933375, 9866750, 19733500]

約数ペア:

[(1, 19733500), (2, 9866750), (4, 4933375), (5, 3946700), (10, 1973350), (20, 986675), (25, 789340), (50, 394670), (61, 323500), (100, 197335), (122, 161750), (125, 157868), (244, 80875), (250, 78934), (305, 64700), (500, 39467), (610, 32350), (647, 30500), (1220, 16175), (1294, 15250), (1525, 12940), (2588, 7625), (3050, 6470), (3235, 6100)]