21509930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9733}}^1$

素因数の和:9770

約数の個数: 32

約数和(自身を含む): 44153424

約数和(自身を除く): 22643494

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9733, 19466, 48665, 97330, 126529, 165461, 253058, 330922, 632645, 827305, 1265290, 1654610, 2150993, 4301986, 10754965, 21509930]

約数ペア:

[(1, 21509930), (2, 10754965), (5, 4301986), (10, 2150993), (13, 1654610), (17, 1265290), (26, 827305), (34, 632645), (65, 330922), (85, 253058), (130, 165461), (170, 126529), (221, 97330), (442, 48665), (1105, 19466), (2210, 9733)]