20584809

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{593}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16480791

約数列:

[1, 3, 7, 9, 19, 21, 29, 57, 63, 87, 133, 171, 203, 261, 399, 551, 593, 609, 1197, 1653, 1779, 1827, 3857, 4151, 4959, 5337, 11267, 11571, 12453, 17197, 33801, 34713, 37359, 51591, 78869, 101403, 120379, 154773, 236607, 326743, 361137, 709821, 980229, 1083411, 2287201, 2940687, 6861603, 20584809]

約数ペア:

[(1, 20584809), (3, 6861603), (7, 2940687), (9, 2287201), (19, 1083411), (21, 980229), (29, 709821), (57, 361137), (63, 326743), (87, 236607), (133, 154773), (171, 120379), (203, 101403), (261, 78869), (399, 51591), (551, 37359), (593, 34713), (609, 33801), (1197, 17197), (1653, 12453), (1779, 11571), (1827, 11267), (3857, 5337), (4151, 4959)]