81718140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1889}}^1$

素因数の和:2011

約数の個数: 96

約数和(自身を含む): 264176640

約数和(自身を除く): 182458500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 103, 105, 140, 206, 210, 309, 412, 420, 515, 618, 721, 1030, 1236, 1442, 1545, 1889, 2060, 2163, 2884, 3090, 3605, 3778, 4326, 5667, 6180, 7210, 7556, 8652, 9445, 10815, 11334, 13223, 14420, 18890, 21630, 22668, 26446, 28335, 37780, 39669, 43260, 52892, 56670, 66115, 79338, 113340, 132230, 158676, 194567, 198345, 264460, 389134, 396690, 583701, 778268, 793380, 972835, 1167402, 1361969, 1945670, 2334804, 2723938, 2918505, 3891340, 4085907, 5447876, 5837010, 6809845, 8171814, 11674020, 13619690, 16343628, 20429535, 27239380, 40859070, 81718140]

約数ペア:

[(1, 81718140), (2, 40859070), (3, 27239380), (4, 20429535), (5, 16343628), (6, 13619690), (7, 11674020), (10, 8171814), (12, 6809845), (14, 5837010), (15, 5447876), (20, 4085907), (21, 3891340), (28, 2918505), (30, 2723938), (35, 2334804), (42, 1945670), (60, 1361969), (70, 1167402), (84, 972835), (103, 793380), (105, 778268), (140, 583701), (206, 396690), (210, 389134), (309, 264460), (412, 198345), (420, 194567), (515, 158676), (618, 132230), (721, 113340), (1030, 79338), (1236, 66115), (1442, 56670), (1545, 52892), (1889, 43260), (2060, 39669), (2163, 37780), (2884, 28335), (3090, 26446), (3605, 22668), (3778, 21630), (4326, 18890), (5667, 14420), (6180, 13223), (7210, 11334), (7556, 10815), (8652, 9445)]