80408380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:479

約数の個数: 96

約数和(自身を含む): 196580160

約数和(自身を除く): 116171780

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 41, 52, 65, 76, 82, 95, 130, 164, 190, 205, 247, 260, 380, 397, 410, 494, 533, 779, 794, 820, 988, 1066, 1235, 1558, 1588, 1985, 2132, 2470, 2665, 3116, 3895, 3970, 4940, 5161, 5330, 7543, 7790, 7940, 10127, 10322, 10660, 15086, 15580, 16277, 20254, 20644, 25805, 30172, 32554, 37715, 40508, 50635, 51610, 65108, 75430, 81385, 98059, 101270, 103220, 150860, 162770, 196118, 202540, 211601, 309263, 325540, 392236, 423202, 490295, 618526, 846404, 980590, 1058005, 1237052, 1546315, 1961180, 2116010, 3092630, 4020419, 4232020, 6185260, 8040838, 16081676, 20102095, 40204190, 80408380]

約数ペア:

[(1, 80408380), (2, 40204190), (4, 20102095), (5, 16081676), (10, 8040838), (13, 6185260), (19, 4232020), (20, 4020419), (26, 3092630), (38, 2116010), (41, 1961180), (52, 1546315), (65, 1237052), (76, 1058005), (82, 980590), (95, 846404), (130, 618526), (164, 490295), (190, 423202), (205, 392236), (247, 325540), (260, 309263), (380, 211601), (397, 202540), (410, 196118), (494, 162770), (533, 150860), (779, 103220), (794, 101270), (820, 98059), (988, 81385), (1066, 75430), (1235, 65108), (1558, 51610), (1588, 50635), (1985, 40508), (2132, 37715), (2470, 32554), (2665, 30172), (3116, 25805), (3895, 20644), (3970, 20254), (4940, 16277), (5161, 15580), (5330, 15086), (7543, 10660), (7790, 10322), (7940, 10127)]