31256055

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{557}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 57451680

約数和(自身を除く): 26195625

約数列:

[1, 3, 5, 9, 15, 29, 43, 45, 87, 129, 145, 215, 261, 387, 435, 557, 645, 1247, 1305, 1671, 1935, 2785, 3741, 5013, 6235, 8355, 11223, 16153, 18705, 23951, 25065, 48459, 56115, 71853, 80765, 119755, 145377, 215559, 242295, 359265, 694579, 726885, 1077795, 2083737, 3472895, 6251211, 10418685, 31256055]

約数ペア:

[(1, 31256055), (3, 10418685), (5, 6251211), (9, 3472895), (15, 2083737), (29, 1077795), (43, 726885), (45, 694579), (87, 359265), (129, 242295), (145, 215559), (215, 145377), (261, 119755), (387, 80765), (435, 71853), (557, 56115), (645, 48459), (1247, 25065), (1305, 23951), (1671, 18705), (1935, 16153), (2785, 11223), (3741, 8355), (5013, 6235)]