20890128

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{787}}^1$

素因数の和:884

約数の個数: 80

約数和(自身を含む): 62535680

約数和(自身を除く): 41645552

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 79, 84, 112, 158, 168, 237, 316, 336, 474, 553, 632, 787, 948, 1106, 1264, 1574, 1659, 1896, 2212, 2361, 3148, 3318, 3792, 4424, 4722, 5509, 6296, 6636, 8848, 9444, 11018, 12592, 13272, 16527, 18888, 22036, 26544, 33054, 37776, 44072, 62173, 66108, 88144, 124346, 132216, 186519, 248692, 264432, 373038, 435211, 497384, 746076, 870422, 994768, 1305633, 1492152, 1740844, 2611266, 2984304, 3481688, 5222532, 6963376, 10445064, 20890128]

約数ペア:

[(1, 20890128), (2, 10445064), (3, 6963376), (4, 5222532), (6, 3481688), (7, 2984304), (8, 2611266), (12, 1740844), (14, 1492152), (16, 1305633), (21, 994768), (24, 870422), (28, 746076), (42, 497384), (48, 435211), (56, 373038), (79, 264432), (84, 248692), (112, 186519), (158, 132216), (168, 124346), (237, 88144), (316, 66108), (336, 62173), (474, 44072), (553, 37776), (632, 33054), (787, 26544), (948, 22036), (1106, 18888), (1264, 16527), (1574, 13272), (1659, 12592), (1896, 11018), (2212, 9444), (2361, 8848), (3148, 6636), (3318, 6296), (3792, 5509), (4424, 4722)]