21619845

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 42147840

約数和(自身を除く): 20527995

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 97, 117, 127, 135, 195, 291, 351, 381, 485, 585, 635, 873, 1143, 1261, 1455, 1651, 1755, 1905, 2619, 3429, 3783, 4365, 4953, 5715, 6305, 8255, 11349, 12319, 13095, 14859, 17145, 18915, 24765, 34047, 36957, 44577, 56745, 61595, 74295, 110871, 160147, 170235, 184785, 222885, 332613, 480441, 554355, 800735, 1441323, 1663065, 2402205, 4323969, 7206615, 21619845]

約数ペア:

[(1, 21619845), (3, 7206615), (5, 4323969), (9, 2402205), (13, 1663065), (15, 1441323), (27, 800735), (39, 554355), (45, 480441), (65, 332613), (97, 222885), (117, 184785), (127, 170235), (135, 160147), (195, 110871), (291, 74295), (351, 61595), (381, 56745), (485, 44577), (585, 36957), (635, 34047), (873, 24765), (1143, 18915), (1261, 17145), (1455, 14859), (1651, 13095), (1755, 12319), (1905, 11349), (2619, 8255), (3429, 6305), (3783, 5715), (4365, 4953)]