320072005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 479001600

約数和(自身を除く): 158929595

約数列:

[1, 5, 11, 17, 19, 43, 55, 85, 95, 187, 209, 215, 323, 419, 473, 731, 817, 935, 1045, 1615, 2095, 2365, 3553, 3655, 4085, 4609, 7123, 7961, 8041, 8987, 13889, 17765, 18017, 23045, 35615, 39805, 40205, 44935, 69445, 78353, 87571, 90085, 135337, 152779, 198187, 306289, 342323, 391765, 437855, 676685, 763895, 990935, 1488707, 1531445, 1711615, 3369179, 3765553, 5819491, 7443535, 16845895, 18827765, 29097455, 64014401, 320072005]

約数ペア:

[(1, 320072005), (5, 64014401), (11, 29097455), (17, 18827765), (19, 16845895), (43, 7443535), (55, 5819491), (85, 3765553), (95, 3369179), (187, 1711615), (209, 1531445), (215, 1488707), (323, 990935), (419, 763895), (473, 676685), (731, 437855), (817, 391765), (935, 342323), (1045, 306289), (1615, 198187), (2095, 152779), (2365, 135337), (3553, 90085), (3655, 87571), (4085, 78353), (4609, 69445), (7123, 44935), (7961, 40205), (8041, 39805), (8987, 35615), (13889, 23045), (17765, 18017)]