81635240

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 189423360

約数和(自身を除く): 107788120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 173, 188, 235, 251, 346, 376, 470, 502, 692, 865, 940, 1004, 1255, 1384, 1730, 1880, 2008, 2510, 3460, 5020, 6920, 8131, 10040, 11797, 16262, 23594, 32524, 40655, 43423, 47188, 58985, 65048, 81310, 86846, 94376, 117970, 162620, 173692, 217115, 235940, 325240, 347384, 434230, 471880, 868460, 1736920, 2040881, 4081762, 8163524, 10204405, 16327048, 20408810, 40817620, 81635240]

約数ペア:

[(1, 81635240), (2, 40817620), (4, 20408810), (5, 16327048), (8, 10204405), (10, 8163524), (20, 4081762), (40, 2040881), (47, 1736920), (94, 868460), (173, 471880), (188, 434230), (235, 347384), (251, 325240), (346, 235940), (376, 217115), (470, 173692), (502, 162620), (692, 117970), (865, 94376), (940, 86846), (1004, 81310), (1255, 65048), (1384, 58985), (1730, 47188), (1880, 43423), (2008, 40655), (2510, 32524), (3460, 23594), (5020, 16262), (6920, 11797), (8131, 10040)]