21529816

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4993}}^1$

素因数の和:5024

約数の個数: 48

約数和(自身を含む): 51238440

約数和(自身を除く): 29708624

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 4993, 9986, 19972, 34951, 39944, 54923, 69902, 109846, 139804, 219692, 244657, 279608, 384461, 439384, 489314, 768922, 978628, 1537844, 1957256, 2691227, 3075688, 5382454, 10764908, 21529816]

約数ペア:

[(1, 21529816), (2, 10764908), (4, 5382454), (7, 3075688), (8, 2691227), (11, 1957256), (14, 1537844), (22, 978628), (28, 768922), (44, 489314), (49, 439384), (56, 384461), (77, 279608), (88, 244657), (98, 219692), (154, 139804), (196, 109846), (308, 69902), (392, 54923), (539, 39944), (616, 34951), (1078, 19972), (2156, 9986), (4312, 4993)]