20979660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2069}}^1$

素因数の和:2107

約数の個数: 72

約数和(自身を含む): 63640080

約数和(自身を除く): 42660420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2069, 2535, 3380, 4138, 5070, 6207, 8276, 10140, 10345, 12414, 20690, 24828, 26897, 31035, 41380, 53794, 62070, 80691, 107588, 124140, 134485, 161382, 268970, 322764, 349661, 403455, 537940, 699322, 806910, 1048983, 1398644, 1613820, 1748305, 2097966, 3496610, 4195932, 5244915, 6993220, 10489830, 20979660]

約数ペア:

[(1, 20979660), (2, 10489830), (3, 6993220), (4, 5244915), (5, 4195932), (6, 3496610), (10, 2097966), (12, 1748305), (13, 1613820), (15, 1398644), (20, 1048983), (26, 806910), (30, 699322), (39, 537940), (52, 403455), (60, 349661), (65, 322764), (78, 268970), (130, 161382), (156, 134485), (169, 124140), (195, 107588), (260, 80691), (338, 62070), (390, 53794), (507, 41380), (676, 31035), (780, 26897), (845, 24828), (1014, 20690), (1690, 12414), (2028, 10345), (2069, 10140), (2535, 8276), (3380, 6207), (4138, 5070)]