20219967

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 31746624

約数和(自身を除く): 11526657

約数列:

[1, 3, 9, 23, 31, 69, 93, 137, 207, 279, 411, 529, 713, 1233, 1587, 2139, 3151, 4247, 4761, 6417, 9453, 12741, 16399, 28359, 38223, 49197, 72473, 97681, 147591, 217419, 293043, 652257, 879129, 2246663, 6739989, 20219967]

約数ペア:

[(1, 20219967), (3, 6739989), (9, 2246663), (23, 879129), (31, 652257), (69, 293043), (93, 217419), (137, 147591), (207, 97681), (279, 72473), (411, 49197), (529, 38223), (713, 28359), (1233, 16399), (1587, 12741), (2139, 9453), (3151, 6417), (4247, 4761)]