20745890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{1249}}^1$

素因数の和:1418

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 20294110

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 151, 302, 755, 1249, 1510, 1661, 2498, 3322, 6245, 8305, 12490, 13739, 16610, 27478, 68695, 137390, 188599, 377198, 942995, 1885990, 2074589, 4149178, 10372945, 20745890]

約数ペア:

[(1, 20745890), (2, 10372945), (5, 4149178), (10, 2074589), (11, 1885990), (22, 942995), (55, 377198), (110, 188599), (151, 137390), (302, 68695), (755, 27478), (1249, 16610), (1510, 13739), (1661, 12490), (2498, 8305), (3322, 6245)]