81484760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{1249}}^1$

素因数の和:1500

約数の個数: 64

約数和(自身を含む): 210600000

約数和(自身を除く): 129115240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 233, 280, 466, 932, 1165, 1249, 1631, 1864, 2330, 2498, 3262, 4660, 4996, 6245, 6524, 8155, 8743, 9320, 9992, 12490, 13048, 16310, 17486, 24980, 32620, 34972, 43715, 49960, 65240, 69944, 87430, 174860, 291017, 349720, 582034, 1164068, 1455085, 2037119, 2328136, 2910170, 4074238, 5820340, 8148476, 10185595, 11640680, 16296952, 20371190, 40742380, 81484760]

約数ペア:

[(1, 81484760), (2, 40742380), (4, 20371190), (5, 16296952), (7, 11640680), (8, 10185595), (10, 8148476), (14, 5820340), (20, 4074238), (28, 2910170), (35, 2328136), (40, 2037119), (56, 1455085), (70, 1164068), (140, 582034), (233, 349720), (280, 291017), (466, 174860), (932, 87430), (1165, 69944), (1249, 65240), (1631, 49960), (1864, 43715), (2330, 34972), (2498, 32620), (3262, 24980), (4660, 17486), (4996, 16310), (6245, 13048), (6524, 12490), (8155, 9992), (8743, 9320)]