128778384

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{787}}^1$

素因数の和:1292

約数の個数: 80

約数和(自身を含む): 381467648

約数和(自身を除く): 252689264

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 487, 787, 974, 1461, 1574, 1948, 2361, 2922, 3148, 3409, 3896, 4722, 5509, 5844, 6296, 6818, 7792, 9444, 10227, 11018, 11688, 12592, 13636, 16527, 18888, 20454, 22036, 23376, 27272, 33054, 37776, 40908, 44072, 54544, 66108, 81816, 88144, 132216, 163632, 264432, 383269, 766538, 1149807, 1533076, 2299614, 2682883, 3066152, 4599228, 5365766, 6132304, 8048649, 9198456, 10731532, 16097298, 18396912, 21463064, 32194596, 42926128, 64389192, 128778384]

約数ペア:

[(1, 128778384), (2, 64389192), (3, 42926128), (4, 32194596), (6, 21463064), (7, 18396912), (8, 16097298), (12, 10731532), (14, 9198456), (16, 8048649), (21, 6132304), (24, 5365766), (28, 4599228), (42, 3066152), (48, 2682883), (56, 2299614), (84, 1533076), (112, 1149807), (168, 766538), (336, 383269), (487, 264432), (787, 163632), (974, 132216), (1461, 88144), (1574, 81816), (1948, 66108), (2361, 54544), (2922, 44072), (3148, 40908), (3409, 37776), (3896, 33054), (4722, 27272), (5509, 23376), (5844, 22036), (6296, 20454), (6818, 18888), (7792, 16527), (9444, 13636), (10227, 12592), (11018, 11688)]