8688890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:219

約数の個数: 64

約数和(自身を含む): 19353600

約数和(自身を除く): 10664710

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 47, 70, 94, 95, 133, 139, 190, 235, 266, 278, 329, 470, 658, 665, 695, 893, 973, 1330, 1390, 1645, 1786, 1946, 2641, 3290, 4465, 4865, 5282, 6251, 6533, 8930, 9730, 12502, 13066, 13205, 18487, 26410, 31255, 32665, 36974, 45731, 62510, 65330, 91462, 92435, 124127, 184870, 228655, 248254, 457310, 620635, 868889, 1241270, 1737778, 4344445, 8688890]

約数ペア:

[(1, 8688890), (2, 4344445), (5, 1737778), (7, 1241270), (10, 868889), (14, 620635), (19, 457310), (35, 248254), (38, 228655), (47, 184870), (70, 124127), (94, 92435), (95, 91462), (133, 65330), (139, 62510), (190, 45731), (235, 36974), (266, 32665), (278, 31255), (329, 26410), (470, 18487), (658, 13205), (665, 13066), (695, 12502), (893, 9730), (973, 8930), (1330, 6533), (1390, 6251), (1645, 5282), (1786, 4865), (1946, 4465), (2641, 3290)]