71989995

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 144884736

約数和(自身を除く): 72894741

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 157, 165, 231, 385, 397, 471, 785, 1099, 1155, 1191, 1727, 1985, 2355, 2779, 3297, 4367, 5181, 5495, 5955, 8337, 8635, 12089, 13101, 13895, 16485, 21835, 25905, 30569, 36267, 41685, 60445, 62329, 65505, 91707, 152845, 181335, 186987, 311645, 436303, 458535, 685619, 934935, 1308909, 2056857, 2181515, 3428095, 4799333, 6544545, 10284285, 14397999, 23996665, 71989995]

約数ペア:

[(1, 71989995), (3, 23996665), (5, 14397999), (7, 10284285), (11, 6544545), (15, 4799333), (21, 3428095), (33, 2181515), (35, 2056857), (55, 1308909), (77, 934935), (105, 685619), (157, 458535), (165, 436303), (231, 311645), (385, 186987), (397, 181335), (471, 152845), (785, 91707), (1099, 65505), (1155, 62329), (1191, 60445), (1727, 41685), (1985, 36267), (2355, 30569), (2779, 25905), (3297, 21835), (4367, 16485), (5181, 13895), (5495, 13101), (5955, 12089), (8337, 8635)]