31680280

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{11821}}^1$

素因数の和:11899

約数の個数: 32

約数和(自身を含む): 72350640

約数和(自身を除く): 40670360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 11821, 23642, 47284, 59105, 94568, 118210, 236420, 472840, 792007, 1584014, 3168028, 3960035, 6336056, 7920070, 15840140, 31680280]

約数ペア:

[(1, 31680280), (2, 15840140), (4, 7920070), (5, 6336056), (8, 3960035), (10, 3168028), (20, 1584014), (40, 792007), (67, 472840), (134, 236420), (268, 118210), (335, 94568), (536, 59105), (670, 47284), (1340, 23642), (2680, 11821)]