660565521

素因数分解:

$3^2\times 7^5\times {\mathrm{11}}^1\times {\mathrm{397}}^1$

素因数の和:449

約数の個数: 72

約数和(自身を含む): 1217421504

約数和(自身を除く): 556855983

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 343, 397, 441, 539, 693, 1029, 1191, 1617, 2401, 2779, 3087, 3573, 3773, 4367, 4851, 7203, 8337, 11319, 13101, 16807, 19453, 21609, 25011, 26411, 30569, 33957, 39303, 50421, 58359, 79233, 91707, 136171, 151263, 175077, 184877, 213983, 237699, 275121, 408513, 554631, 641949, 953197, 1225539, 1497881, 1663893, 1925847, 2859591, 4493643, 6672379, 8578773, 10485167, 13480929, 20017137, 31455501, 60051411, 73396169, 94366503, 220188507, 660565521]

約数ペア:

[(1, 660565521), (3, 220188507), (7, 94366503), (9, 73396169), (11, 60051411), (21, 31455501), (33, 20017137), (49, 13480929), (63, 10485167), (77, 8578773), (99, 6672379), (147, 4493643), (231, 2859591), (343, 1925847), (397, 1663893), (441, 1497881), (539, 1225539), (693, 953197), (1029, 641949), (1191, 554631), (1617, 408513), (2401, 275121), (2779, 237699), (3087, 213983), (3573, 184877), (3773, 175077), (4367, 151263), (4851, 136171), (7203, 91707), (8337, 79233), (11319, 58359), (13101, 50421), (16807, 39303), (19453, 33957), (21609, 30569), (25011, 26411)]