21311004

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1171

約数の個数: 72

約数和(自身を含む): 58913680

約数和(自身を除く): 37602676

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 22, 26, 33, 39, 44, 52, 66, 78, 121, 132, 143, 156, 242, 286, 363, 429, 484, 572, 726, 858, 1129, 1452, 1573, 1716, 2258, 3146, 3387, 4516, 4719, 6292, 6774, 9438, 12419, 13548, 14677, 18876, 24838, 29354, 37257, 44031, 49676, 58708, 74514, 88062, 136609, 149028, 161447, 176124, 273218, 322894, 409827, 484341, 546436, 645788, 819654, 968682, 1639308, 1775917, 1937364, 3551834, 5327751, 7103668, 10655502, 21311004]

約数ペア:

[(1, 21311004), (2, 10655502), (3, 7103668), (4, 5327751), (6, 3551834), (11, 1937364), (12, 1775917), (13, 1639308), (22, 968682), (26, 819654), (33, 645788), (39, 546436), (44, 484341), (52, 409827), (66, 322894), (78, 273218), (121, 176124), (132, 161447), (143, 149028), (156, 136609), (242, 88062), (286, 74514), (363, 58708), (429, 49676), (484, 44031), (572, 37257), (726, 29354), (858, 24838), (1129, 18876), (1452, 14677), (1573, 13548), (1716, 12419), (2258, 9438), (3146, 6774), (3387, 6292), (4516, 4719)]