20181879

素因数分解:

$3^5\times {\mathrm{23}}^2\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 36

約数和(自身を含む): 31804136

約数和(自身を除く): 11622257

約数列:

[1, 3, 9, 23, 27, 69, 81, 157, 207, 243, 471, 529, 621, 1413, 1587, 1863, 3611, 4239, 4761, 5589, 10833, 12717, 14283, 32499, 38151, 42849, 83053, 97497, 128547, 249159, 292491, 747477, 877473, 2242431, 6727293, 20181879]

約数ペア:

[(1, 20181879), (3, 6727293), (9, 2242431), (23, 877473), (27, 747477), (69, 292491), (81, 249159), (157, 128547), (207, 97497), (243, 83053), (471, 42849), (529, 38151), (621, 32499), (1413, 14283), (1587, 12717), (1863, 10833), (3611, 5589), (4239, 4761)]