28490830

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 52416000

約数和(自身を除く): 23925170

約数列:

[1, 2, 5, 10, 103, 139, 199, 206, 278, 398, 515, 695, 995, 1030, 1390, 1990, 14317, 20497, 27661, 28634, 40994, 55322, 71585, 102485, 138305, 143170, 204970, 276610, 2849083, 5698166, 14245415, 28490830]

約数ペア:

[(1, 28490830), (2, 14245415), (5, 5698166), (10, 2849083), (103, 276610), (139, 204970), (199, 143170), (206, 138305), (278, 102485), (398, 71585), (515, 55322), (695, 40994), (995, 28634), (1030, 27661), (1390, 20497), (1990, 14317)]