21247814

素因数分解:

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

素因数の和:225

約数の個数: 48

約数和(自身を含む): 40346880

約数和(自身を除く): 19099066

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 133, 151, 161, 266, 302, 322, 437, 529, 874, 1057, 1058, 2114, 2869, 3059, 3473, 3703, 5738, 6118, 6946, 7406, 10051, 20083, 20102, 24311, 40166, 48622, 65987, 70357, 79879, 131974, 140714, 159758, 461909, 559153, 923818, 1118306, 1517701, 3035402, 10623907, 21247814]

約数ペア:

[(1, 21247814), (2, 10623907), (7, 3035402), (14, 1517701), (19, 1118306), (23, 923818), (38, 559153), (46, 461909), (133, 159758), (151, 140714), (161, 131974), (266, 79879), (302, 70357), (322, 65987), (437, 48622), (529, 40166), (874, 24311), (1057, 20102), (1058, 20083), (2114, 10051), (2869, 7406), (3059, 6946), (3473, 6118), (3703, 5738)]