39919220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{431}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 91881216

約数和(自身を除く): 51961996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 421, 431, 842, 862, 1684, 1724, 2105, 2155, 4210, 4310, 4631, 4741, 8420, 8620, 9262, 9482, 18524, 18964, 23155, 23705, 46310, 47410, 92620, 94820, 181451, 362902, 725804, 907255, 1814510, 1995961, 3629020, 3991922, 7983844, 9979805, 19959610, 39919220]

約数ペア:

[(1, 39919220), (2, 19959610), (4, 9979805), (5, 7983844), (10, 3991922), (11, 3629020), (20, 1995961), (22, 1814510), (44, 907255), (55, 725804), (110, 362902), (220, 181451), (421, 94820), (431, 92620), (842, 47410), (862, 46310), (1684, 23705), (1724, 23155), (2105, 18964), (2155, 18524), (4210, 9482), (4310, 9262), (4631, 8620), (4741, 8420)]