720311907

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{11213}}^1$

素因数の和:11272

約数の個数: 48

約数和(自身を含む): 1227260160

約数和(自身を除く): 506948253

約数列:

[1, 3, 7, 19, 21, 23, 49, 57, 69, 133, 147, 161, 399, 437, 483, 931, 1127, 1311, 2793, 3059, 3381, 9177, 11213, 21413, 33639, 64239, 78491, 213047, 235473, 257899, 549437, 639141, 773697, 1491329, 1648311, 1805293, 4473987, 4900081, 5415879, 10439303, 12637051, 14700243, 31317909, 34300567, 37911153, 102901701, 240103969, 720311907]

約数ペア:

[(1, 720311907), (3, 240103969), (7, 102901701), (19, 37911153), (21, 34300567), (23, 31317909), (49, 14700243), (57, 12637051), (69, 10439303), (133, 5415879), (147, 4900081), (161, 4473987), (399, 1805293), (437, 1648311), (483, 1491329), (931, 773697), (1127, 639141), (1311, 549437), (2793, 257899), (3059, 235473), (3381, 213047), (9177, 78491), (11213, 64239), (21413, 33639)]