21211731

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1213}}^1$

素因数の和:1315

約数の個数: 24

約数和(自身を含む): 32195280

約数和(自身を除く): 10983549

約数列:

[1, 3, 9, 29, 67, 87, 201, 261, 603, 1213, 1943, 3639, 5829, 10917, 17487, 35177, 81271, 105531, 243813, 316593, 731439, 2356859, 7070577, 21211731]

約数ペア:

[(1, 21211731), (3, 7070577), (9, 2356859), (29, 731439), (67, 316593), (87, 243813), (201, 105531), (261, 81271), (603, 35177), (1213, 17487), (1943, 10917), (3639, 5829)]