689403790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:865

約数の個数: 64

約数和(自身を含む): 1345248000

約数和(自身を除く): 655844210

約数列:

[1, 2, 5, 10, 19, 38, 59, 89, 95, 118, 178, 190, 295, 445, 590, 691, 890, 1121, 1382, 1691, 2242, 3382, 3455, 5251, 5605, 6910, 8455, 10502, 11210, 13129, 16910, 26255, 26258, 40769, 52510, 61499, 65645, 81538, 99769, 122998, 131290, 199538, 203845, 307495, 407690, 498845, 614990, 774611, 997690, 1168481, 1549222, 2336962, 3628441, 3873055, 5842405, 7256882, 7746110, 11684810, 18142205, 36284410, 68940379, 137880758, 344701895, 689403790]

約数ペア:

[(1, 689403790), (2, 344701895), (5, 137880758), (10, 68940379), (19, 36284410), (38, 18142205), (59, 11684810), (89, 7746110), (95, 7256882), (118, 5842405), (178, 3873055), (190, 3628441), (295, 2336962), (445, 1549222), (590, 1168481), (691, 997690), (890, 774611), (1121, 614990), (1382, 498845), (1691, 407690), (2242, 307495), (3382, 203845), (3455, 199538), (5251, 131290), (5605, 122998), (6910, 99769), (8455, 81538), (10502, 65645), (11210, 61499), (13129, 52510), (16910, 40769), (26255, 26258)]