20780136

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{149}}^2$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 61018230

約数和(自身を除く): 40238094

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 149, 156, 234, 298, 312, 447, 468, 596, 894, 936, 1192, 1341, 1788, 1937, 2682, 3576, 3874, 5364, 5811, 7748, 10728, 11622, 15496, 17433, 22201, 23244, 34866, 44402, 46488, 66603, 69732, 88804, 133206, 139464, 177608, 199809, 266412, 288613, 399618, 532824, 577226, 799236, 865839, 1154452, 1598472, 1731678, 2308904, 2597517, 3463356, 5195034, 6926712, 10390068, 20780136]

約数ペア:

[(1, 20780136), (2, 10390068), (3, 6926712), (4, 5195034), (6, 3463356), (8, 2597517), (9, 2308904), (12, 1731678), (13, 1598472), (18, 1154452), (24, 865839), (26, 799236), (36, 577226), (39, 532824), (52, 399618), (72, 288613), (78, 266412), (104, 199809), (117, 177608), (149, 139464), (156, 133206), (234, 88804), (298, 69732), (312, 66603), (447, 46488), (468, 44402), (596, 34866), (894, 23244), (936, 22201), (1192, 17433), (1341, 15496), (1788, 11622), (1937, 10728), (2682, 7748), (3576, 5811), (3874, 5364)]