19994623216

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{349}}^1\times {\mathrm{22807}}^1$

素因数の和:23321

約数の個数: 40

約数和(自身を含む): 39099754400

約数和(自身を除く): 19105131184

約数列:

[1, 2, 4, 8, 16, 157, 314, 349, 628, 698, 1256, 1396, 2512, 2792, 5584, 22807, 45614, 54793, 91228, 109586, 182456, 219172, 364912, 438344, 876688, 3580699, 7161398, 7959643, 14322796, 15919286, 28645592, 31838572, 57291184, 63677144, 127354288, 1249663951, 2499327902, 4998655804, 9997311608, 19994623216]

約数ペア:

[(1, 19994623216), (2, 9997311608), (4, 4998655804), (8, 2499327902), (16, 1249663951), (157, 127354288), (314, 63677144), (349, 57291184), (628, 31838572), (698, 28645592), (1256, 15919286), (1396, 14322796), (2512, 7959643), (2792, 7161398), (5584, 3580699), (22807, 876688), (45614, 438344), (54793, 364912), (91228, 219172), (109586, 182456)]