15723981

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 28444416

約数和(自身を除く): 12720435

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 73, 91, 117, 219, 263, 273, 511, 657, 789, 819, 949, 1533, 1841, 2367, 2847, 3419, 4599, 5523, 6643, 8541, 10257, 16569, 19199, 19929, 23933, 30771, 57597, 59787, 71799, 134393, 172791, 215397, 249587, 403179, 748761, 1209537, 1747109, 2246283, 5241327, 15723981]

約数ペア:

[(1, 15723981), (3, 5241327), (7, 2246283), (9, 1747109), (13, 1209537), (21, 748761), (39, 403179), (63, 249587), (73, 215397), (91, 172791), (117, 134393), (219, 71799), (263, 59787), (273, 57597), (511, 30771), (657, 23933), (789, 19929), (819, 19199), (949, 16569), (1533, 10257), (1841, 8541), (2367, 6643), (2847, 5523), (3419, 4599)]