31871721

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{151}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 53795840

約数和(自身を除く): 21924119

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 151, 161, 399, 437, 453, 483, 529, 1057, 1311, 1587, 2869, 3059, 3171, 3473, 3703, 8607, 9177, 10051, 10419, 11109, 20083, 24311, 30153, 60249, 65987, 70357, 72933, 79879, 197961, 211071, 239637, 461909, 559153, 1385727, 1517701, 1677459, 4553103, 10623907, 31871721]

約数ペア:

[(1, 31871721), (3, 10623907), (7, 4553103), (19, 1677459), (21, 1517701), (23, 1385727), (57, 559153), (69, 461909), (133, 239637), (151, 211071), (161, 197961), (399, 79879), (437, 72933), (453, 70357), (483, 65987), (529, 60249), (1057, 30153), (1311, 24311), (1587, 20083), (2869, 11109), (3059, 10419), (3171, 10051), (3473, 9177), (3703, 8607)]