12721940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{751}}^1$

素因数の和:789

約数の個数: 72

約数和(自身を含む): 33605376

約数和(自身を除く): 20883436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 751, 770, 847, 1210, 1502, 1540, 1694, 2420, 3004, 3388, 3755, 4235, 5257, 7510, 8261, 8470, 10514, 15020, 16522, 16940, 21028, 26285, 33044, 41305, 52570, 57827, 82610, 90871, 105140, 115654, 165220, 181742, 231308, 289135, 363484, 454355, 578270, 636097, 908710, 1156540, 1272194, 1817420, 2544388, 3180485, 6360970, 12721940]

約数ペア:

[(1, 12721940), (2, 6360970), (4, 3180485), (5, 2544388), (7, 1817420), (10, 1272194), (11, 1156540), (14, 908710), (20, 636097), (22, 578270), (28, 454355), (35, 363484), (44, 289135), (55, 231308), (70, 181742), (77, 165220), (110, 115654), (121, 105140), (140, 90871), (154, 82610), (220, 57827), (242, 52570), (308, 41305), (385, 33044), (484, 26285), (605, 21028), (751, 16940), (770, 16522), (847, 15020), (1210, 10514), (1502, 8470), (1540, 8261), (1694, 7510), (2420, 5257), (3004, 4235), (3388, 3755)]