55506980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 127209600

約数和(自身を除く): 71702620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 79, 86, 95, 158, 172, 190, 215, 316, 380, 395, 430, 790, 817, 860, 1501, 1580, 1634, 1849, 3002, 3268, 3397, 3698, 4085, 6004, 6794, 7396, 7505, 8170, 9245, 13588, 15010, 16340, 16985, 18490, 30020, 33970, 35131, 36980, 64543, 67940, 70262, 129086, 140524, 146071, 175655, 258172, 292142, 322715, 351310, 584284, 645430, 702620, 730355, 1290860, 1460710, 2775349, 2921420, 5550698, 11101396, 13876745, 27753490, 55506980]

約数ペア:

[(1, 55506980), (2, 27753490), (4, 13876745), (5, 11101396), (10, 5550698), (19, 2921420), (20, 2775349), (38, 1460710), (43, 1290860), (76, 730355), (79, 702620), (86, 645430), (95, 584284), (158, 351310), (172, 322715), (190, 292142), (215, 258172), (316, 175655), (380, 146071), (395, 140524), (430, 129086), (790, 70262), (817, 67940), (860, 64543), (1501, 36980), (1580, 35131), (1634, 33970), (1849, 30020), (3002, 18490), (3268, 16985), (3397, 16340), (3698, 15010), (4085, 13588), (6004, 9245), (6794, 8170), (7396, 7505)]