20197647

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 11290353

約数列:

[1, 3, 9, 27, 31, 59, 93, 177, 279, 409, 531, 837, 1227, 1593, 1829, 3681, 5487, 11043, 12679, 16461, 24131, 38037, 49383, 72393, 114111, 217179, 342333, 651537, 748061, 2244183, 6732549, 20197647]

約数ペア:

[(1, 20197647), (3, 6732549), (9, 2244183), (27, 748061), (31, 651537), (59, 342333), (93, 217179), (177, 114111), (279, 72393), (409, 49383), (531, 38037), (837, 24131), (1227, 16461), (1593, 12679), (1829, 11043), (3681, 5487)]