80408980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{3877}}^1$

素因数の和:3964

約数の個数: 48

約数和(自身を含む): 181769616

約数和(自身を除く): 101360636

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 85, 122, 170, 244, 305, 340, 610, 1037, 1220, 2074, 3877, 4148, 5185, 7754, 10370, 15508, 19385, 20740, 38770, 65909, 77540, 131818, 236497, 263636, 329545, 472994, 659090, 945988, 1182485, 1318180, 2364970, 4020449, 4729940, 8040898, 16081796, 20102245, 40204490, 80408980]

約数ペア:

[(1, 80408980), (2, 40204490), (4, 20102245), (5, 16081796), (10, 8040898), (17, 4729940), (20, 4020449), (34, 2364970), (61, 1318180), (68, 1182485), (85, 945988), (122, 659090), (170, 472994), (244, 329545), (305, 263636), (340, 236497), (610, 131818), (1037, 77540), (1220, 65909), (2074, 38770), (3877, 20740), (4148, 19385), (5185, 15508), (7754, 10370)]