105428720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:670

約数の個数: 80

約数和(自身を含む): 260400000

約数和(自身を除く): 154971280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 139, 152, 190, 278, 304, 380, 499, 556, 695, 760, 998, 1112, 1390, 1520, 1996, 2224, 2495, 2641, 2780, 3992, 4990, 5282, 5560, 7984, 9481, 9980, 10564, 11120, 13205, 18962, 19960, 21128, 26410, 37924, 39920, 42256, 47405, 52820, 69361, 75848, 94810, 105640, 138722, 151696, 189620, 211280, 277444, 346805, 379240, 554888, 693610, 758480, 1109776, 1317859, 1387220, 2635718, 2774440, 5271436, 5548880, 6589295, 10542872, 13178590, 21085744, 26357180, 52714360, 105428720]

約数ペア:

[(1, 105428720), (2, 52714360), (4, 26357180), (5, 21085744), (8, 13178590), (10, 10542872), (16, 6589295), (19, 5548880), (20, 5271436), (38, 2774440), (40, 2635718), (76, 1387220), (80, 1317859), (95, 1109776), (139, 758480), (152, 693610), (190, 554888), (278, 379240), (304, 346805), (380, 277444), (499, 211280), (556, 189620), (695, 151696), (760, 138722), (998, 105640), (1112, 94810), (1390, 75848), (1520, 69361), (1996, 52820), (2224, 47405), (2495, 42256), (2641, 39920), (2780, 37924), (3992, 26410), (4990, 21128), (5282, 19960), (5560, 18962), (7984, 13205), (9481, 11120), (9980, 10564)]