40441520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{281}}^1$

素因数の和:558

約数の個数: 80

約数和(自身を含む): 108260928

約数和(自身を除く): 67819408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 257, 280, 281, 514, 560, 562, 1028, 1124, 1285, 1405, 1799, 1967, 2056, 2248, 2570, 2810, 3598, 3934, 4112, 4496, 5140, 5620, 7196, 7868, 8995, 9835, 10280, 11240, 14392, 15736, 17990, 19670, 20560, 22480, 28784, 31472, 35980, 39340, 71960, 72217, 78680, 143920, 144434, 157360, 288868, 361085, 505519, 577736, 722170, 1011038, 1155472, 1444340, 2022076, 2527595, 2888680, 4044152, 5055190, 5777360, 8088304, 10110380, 20220760, 40441520]

約数ペア:

[(1, 40441520), (2, 20220760), (4, 10110380), (5, 8088304), (7, 5777360), (8, 5055190), (10, 4044152), (14, 2888680), (16, 2527595), (20, 2022076), (28, 1444340), (35, 1155472), (40, 1011038), (56, 722170), (70, 577736), (80, 505519), (112, 361085), (140, 288868), (257, 157360), (280, 144434), (281, 143920), (514, 78680), (560, 72217), (562, 71960), (1028, 39340), (1124, 35980), (1285, 31472), (1405, 28784), (1799, 22480), (1967, 20560), (2056, 19670), (2248, 17990), (2570, 15736), (2810, 14392), (3598, 11240), (3934, 10280), (4112, 9835), (4496, 8995), (5140, 7868), (5620, 7196)]