20051140

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 43690752

約数和(自身を除く): 23639612

約数列:

[1, 2, 4, 5, 10, 20, 47, 83, 94, 166, 188, 235, 257, 332, 415, 470, 514, 830, 940, 1028, 1285, 1660, 2570, 3901, 5140, 7802, 12079, 15604, 19505, 21331, 24158, 39010, 42662, 48316, 60395, 78020, 85324, 106655, 120790, 213310, 241580, 426620, 1002557, 2005114, 4010228, 5012785, 10025570, 20051140]

約数ペア:

[(1, 20051140), (2, 10025570), (4, 5012785), (5, 4010228), (10, 2005114), (20, 1002557), (47, 426620), (83, 241580), (94, 213310), (166, 120790), (188, 106655), (235, 85324), (257, 78020), (332, 60395), (415, 48316), (470, 42662), (514, 39010), (830, 24158), (940, 21331), (1028, 19505), (1285, 15604), (1660, 12079), (2570, 7802), (3901, 5140)]