281236040

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1\times {\mathrm{281}}^1$

素因数の和:614

約数の個数: 64

約数和(自身を含む): 643230720

約数和(自身を除く): 361994680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 191, 262, 281, 382, 524, 562, 655, 764, 955, 1048, 1124, 1310, 1405, 1528, 1910, 2248, 2620, 2810, 3820, 5240, 5620, 7640, 11240, 25021, 36811, 50042, 53671, 73622, 100084, 107342, 125105, 147244, 184055, 200168, 214684, 250210, 268355, 294488, 368110, 429368, 500420, 536710, 736220, 1000840, 1073420, 1472440, 2146840, 7030901, 14061802, 28123604, 35154505, 56247208, 70309010, 140618020, 281236040]

約数ペア:

[(1, 281236040), (2, 140618020), (4, 70309010), (5, 56247208), (8, 35154505), (10, 28123604), (20, 14061802), (40, 7030901), (131, 2146840), (191, 1472440), (262, 1073420), (281, 1000840), (382, 736220), (524, 536710), (562, 500420), (655, 429368), (764, 368110), (955, 294488), (1048, 268355), (1124, 250210), (1310, 214684), (1405, 200168), (1528, 184055), (1910, 147244), (2248, 125105), (2620, 107342), (2810, 100084), (3820, 73622), (5240, 53671), (5620, 50042), (7640, 36811), (11240, 25021)]