81564228

素因数分解:

$2^2\times 3^2\times {\mathrm{89}}^1\times {\mathrm{25457}}^1$

素因数の和:25556

約数の個数: 36

約数和(自身を含む): 208501020

約数和(自身を除く): 126936792

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 89, 178, 267, 356, 534, 801, 1068, 1602, 3204, 25457, 50914, 76371, 101828, 152742, 229113, 305484, 458226, 916452, 2265673, 4531346, 6797019, 9062692, 13594038, 20391057, 27188076, 40782114, 81564228]

約数ペア:

[(1, 81564228), (2, 40782114), (3, 27188076), (4, 20391057), (6, 13594038), (9, 9062692), (12, 6797019), (18, 4531346), (36, 2265673), (89, 916452), (178, 458226), (267, 305484), (356, 229113), (534, 152742), (801, 101828), (1068, 76371), (1602, 50914), (3204, 25457)]