21181518

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{191}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 47354112

約数和(自身を除く): 26172594

約数列:

[1, 2, 3, 6, 9, 18, 61, 101, 122, 183, 191, 202, 303, 366, 382, 549, 573, 606, 909, 1098, 1146, 1719, 1818, 3438, 6161, 11651, 12322, 18483, 19291, 23302, 34953, 36966, 38582, 55449, 57873, 69906, 104859, 110898, 115746, 173619, 209718, 347238, 1176751, 2353502, 3530253, 7060506, 10590759, 21181518]

約数ペア:

[(1, 21181518), (2, 10590759), (3, 7060506), (6, 3530253), (9, 2353502), (18, 1176751), (61, 347238), (101, 209718), (122, 173619), (183, 115746), (191, 110898), (202, 104859), (303, 69906), (366, 57873), (382, 55449), (549, 38582), (573, 36966), (606, 34953), (909, 23302), (1098, 19291), (1146, 18483), (1719, 12322), (1818, 11651), (3438, 6161)]