20055820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{229}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 23993780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 151, 229, 290, 302, 458, 580, 604, 755, 916, 1145, 1510, 2290, 3020, 4379, 4580, 6641, 8758, 13282, 17516, 21895, 26564, 33205, 34579, 43790, 66410, 69158, 87580, 132820, 138316, 172895, 345790, 691580, 1002791, 2005582, 4011164, 5013955, 10027910, 20055820]

約数ペア:

[(1, 20055820), (2, 10027910), (4, 5013955), (5, 4011164), (10, 2005582), (20, 1002791), (29, 691580), (58, 345790), (116, 172895), (145, 138316), (151, 132820), (229, 87580), (290, 69158), (302, 66410), (458, 43790), (580, 34579), (604, 33205), (755, 26564), (916, 21895), (1145, 17516), (1510, 13282), (2290, 8758), (3020, 6641), (4379, 4580)]