21587566

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 44706816

約数和(自身を除く): 23119250

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 41, 77, 82, 91, 143, 154, 182, 263, 286, 287, 451, 526, 533, 574, 902, 1001, 1066, 1841, 2002, 2893, 3157, 3419, 3682, 3731, 5786, 5863, 6314, 6838, 7462, 10783, 11726, 20251, 21566, 23933, 37609, 40502, 41041, 47866, 75218, 75481, 82082, 118613, 140179, 150962, 237226, 263263, 280358, 526526, 830291, 981253, 1541969, 1660582, 1962506, 3083938, 10793783, 21587566]

約数ペア:

[(1, 21587566), (2, 10793783), (7, 3083938), (11, 1962506), (13, 1660582), (14, 1541969), (22, 981253), (26, 830291), (41, 526526), (77, 280358), (82, 263263), (91, 237226), (143, 150962), (154, 140179), (182, 118613), (263, 82082), (286, 75481), (287, 75218), (451, 47866), (526, 41041), (533, 40502), (574, 37609), (902, 23933), (1001, 21566), (1066, 20251), (1841, 11726), (2002, 10783), (2893, 7462), (3157, 6838), (3419, 6314), (3682, 5863), (3731, 5786)]