211737981

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{18917}}^1$

素因数の和:18981

約数の個数: 32

約数和(自身を含む): 355961088

約数和(自身を除く): 144223107

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 3731, 11193, 18917, 56751, 132419, 245921, 397257, 737763, 775597, 1721447, 2326791, 5164341, 5429179, 10082761, 16287537, 30248283, 70579327, 211737981]

約数ペア:

[(1, 211737981), (3, 70579327), (7, 30248283), (13, 16287537), (21, 10082761), (39, 5429179), (41, 5164341), (91, 2326791), (123, 1721447), (273, 775597), (287, 737763), (533, 397257), (861, 245921), (1599, 132419), (3731, 56751), (11193, 18917)]