20557810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 50803200

約数和(自身を除く): 30245390

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 29, 35, 38, 41, 58, 65, 70, 82, 91, 95, 130, 133, 145, 182, 190, 203, 205, 247, 266, 287, 290, 377, 406, 410, 455, 494, 533, 551, 574, 665, 754, 779, 910, 1015, 1066, 1102, 1189, 1235, 1330, 1435, 1558, 1729, 1885, 2030, 2378, 2470, 2639, 2665, 2755, 2870, 3458, 3731, 3770, 3857, 3895, 5278, 5330, 5453, 5510, 5945, 7163, 7462, 7714, 7790, 8323, 8645, 10127, 10906, 11890, 13195, 14326, 15457, 16646, 17290, 18655, 19285, 20254, 22591, 26390, 27265, 30914, 35815, 37310, 38570, 41615, 45182, 50141, 50635, 54530, 70889, 71630, 77285, 83230, 100282, 101270, 108199, 112955, 141778, 154570, 158137, 216398, 225910, 250705, 293683, 316274, 354445, 501410, 540995, 587366, 708890, 790685, 1081990, 1468415, 1581370, 2055781, 2936830, 4111562, 10278905, 20557810]

約数ペア:

[(1, 20557810), (2, 10278905), (5, 4111562), (7, 2936830), (10, 2055781), (13, 1581370), (14, 1468415), (19, 1081990), (26, 790685), (29, 708890), (35, 587366), (38, 540995), (41, 501410), (58, 354445), (65, 316274), (70, 293683), (82, 250705), (91, 225910), (95, 216398), (130, 158137), (133, 154570), (145, 141778), (182, 112955), (190, 108199), (203, 101270), (205, 100282), (247, 83230), (266, 77285), (287, 71630), (290, 70889), (377, 54530), (406, 50635), (410, 50141), (455, 45182), (494, 41615), (533, 38570), (551, 37310), (574, 35815), (665, 30914), (754, 27265), (779, 26390), (910, 22591), (1015, 20254), (1066, 19285), (1102, 18655), (1189, 17290), (1235, 16646), (1330, 15457), (1435, 14326), (1558, 13195), (1729, 11890), (1885, 10906), (2030, 10127), (2378, 8645), (2470, 8323), (2639, 7790), (2665, 7714), (2755, 7462), (2870, 7163), (3458, 5945), (3731, 5510), (3770, 5453), (3857, 5330), (3895, 5278)]