31301721

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:128

約数の個数: 60

約数和(自身を含む): 54972720

約数和(自身を除く): 23670999

約数列:

[1, 3, 9, 11, 19, 27, 33, 43, 57, 81, 99, 129, 171, 209, 297, 387, 473, 513, 627, 817, 891, 1161, 1419, 1539, 1849, 1881, 2451, 3483, 4257, 5547, 5643, 7353, 8987, 12771, 16641, 16929, 20339, 22059, 26961, 35131, 38313, 49923, 61017, 66177, 80883, 105393, 149769, 183051, 242649, 316179, 386441, 549153, 727947, 948537, 1159323, 1647459, 2845611, 3477969, 10433907, 31301721]

約数ペア:

[(1, 31301721), (3, 10433907), (9, 3477969), (11, 2845611), (19, 1647459), (27, 1159323), (33, 948537), (43, 727947), (57, 549153), (81, 386441), (99, 316179), (129, 242649), (171, 183051), (209, 149769), (297, 105393), (387, 80883), (473, 66177), (513, 61017), (627, 49923), (817, 38313), (891, 35131), (1161, 26961), (1419, 22059), (1539, 20339), (1849, 16929), (1881, 16641), (2451, 12771), (3483, 8987), (4257, 7353), (5547, 5643)]