21793716

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{439}}^1$

素因数の和:653

約数の個数: 72

約数和(自身を含む): 63423360

約数和(自身を除く): 41629644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 439, 591, 788, 878, 1182, 1317, 1379, 1756, 1773, 2364, 2634, 2758, 3073, 3546, 3951, 4137, 5268, 5516, 6146, 7092, 7902, 8274, 9219, 12292, 12411, 15804, 16548, 18438, 24822, 27657, 36876, 49644, 55314, 86483, 110628, 172966, 259449, 345932, 518898, 605381, 778347, 1037796, 1210762, 1556694, 1816143, 2421524, 3113388, 3632286, 5448429, 7264572, 10896858, 21793716]

約数ペア:

[(1, 21793716), (2, 10896858), (3, 7264572), (4, 5448429), (6, 3632286), (7, 3113388), (9, 2421524), (12, 1816143), (14, 1556694), (18, 1210762), (21, 1037796), (28, 778347), (36, 605381), (42, 518898), (63, 345932), (84, 259449), (126, 172966), (197, 110628), (252, 86483), (394, 55314), (439, 49644), (591, 36876), (788, 27657), (878, 24822), (1182, 18438), (1317, 16548), (1379, 15804), (1756, 12411), (1773, 12292), (2364, 9219), (2634, 8274), (2758, 7902), (3073, 7092), (3546, 6146), (3951, 5516), (4137, 5268)]