21916740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21487}}^1$

素因数の和:21516

約数の個数: 48

約数和(自身を含む): 64979712

約数和(自身を除く): 43062972

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21487, 42974, 64461, 85948, 107435, 128922, 214870, 257844, 322305, 365279, 429740, 644610, 730558, 1095837, 1289220, 1461116, 1826395, 2191674, 3652790, 4383348, 5479185, 7305580, 10958370, 21916740]

約数ペア:

[(1, 21916740), (2, 10958370), (3, 7305580), (4, 5479185), (5, 4383348), (6, 3652790), (10, 2191674), (12, 1826395), (15, 1461116), (17, 1289220), (20, 1095837), (30, 730558), (34, 644610), (51, 429740), (60, 365279), (68, 322305), (85, 257844), (102, 214870), (170, 128922), (204, 107435), (255, 85948), (340, 64461), (510, 42974), (1020, 21487)]