21559257

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:414

約数の個数: 32

約数和(自身を含む): 33696000

約数和(自身を除く): 12136743

約数列:

[1, 3, 9, 23, 27, 69, 149, 207, 233, 447, 621, 699, 1341, 2097, 3427, 4023, 5359, 6291, 10281, 16077, 30843, 34717, 48231, 92529, 104151, 144693, 312453, 798491, 937359, 2395473, 7186419, 21559257]

約数ペア:

[(1, 21559257), (3, 7186419), (9, 2395473), (23, 937359), (27, 798491), (69, 312453), (149, 144693), (207, 104151), (233, 92529), (447, 48231), (621, 34717), (699, 30843), (1341, 16077), (2097, 10281), (3427, 6291), (4023, 5359)]