208640900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8447}}^1$

素因数の和:8493

約数の個数: 72

約数和(自身を含む): 513300480

約数和(自身を除く): 304659580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 950, 988, 1235, 1300, 1900, 2470, 4940, 6175, 8447, 12350, 16894, 24700, 33788, 42235, 84470, 109811, 160493, 168940, 211175, 219622, 320986, 422350, 439244, 549055, 641972, 802465, 844700, 1098110, 1604930, 2086409, 2196220, 2745275, 3209860, 4012325, 4172818, 5490550, 8024650, 8345636, 10432045, 10981100, 16049300, 20864090, 41728180, 52160225, 104320450, 208640900]

約数ペア:

[(1, 208640900), (2, 104320450), (4, 52160225), (5, 41728180), (10, 20864090), (13, 16049300), (19, 10981100), (20, 10432045), (25, 8345636), (26, 8024650), (38, 5490550), (50, 4172818), (52, 4012325), (65, 3209860), (76, 2745275), (95, 2196220), (100, 2086409), (130, 1604930), (190, 1098110), (247, 844700), (260, 802465), (325, 641972), (380, 549055), (475, 439244), (494, 422350), (650, 320986), (950, 219622), (988, 211175), (1235, 168940), (1300, 160493), (1900, 109811), (2470, 84470), (4940, 42235), (6175, 33788), (8447, 24700), (12350, 16894)]