20512234340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4640777}}^1$

素因数の和:4640816

約数の個数: 48

約数和(自身を含む): 49117994352

約数和(自身を除く): 28605760012

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4640777, 9281554, 18563108, 23203885, 46407770, 60330101, 78893209, 92815540, 120660202, 157786418, 241320404, 301650505, 315572836, 394466045, 603301010, 788932090, 1025611717, 1206602020, 1577864180, 2051223434, 4102446868, 5128058585, 10256117170, 20512234340]

約数ペア:

[(1, 20512234340), (2, 10256117170), (4, 5128058585), (5, 4102446868), (10, 2051223434), (13, 1577864180), (17, 1206602020), (20, 1025611717), (26, 788932090), (34, 603301010), (52, 394466045), (65, 315572836), (68, 301650505), (85, 241320404), (130, 157786418), (170, 120660202), (221, 92815540), (260, 78893209), (340, 60330101), (442, 46407770), (884, 23203885), (1105, 18563108), (2210, 9281554), (4420, 4640777)]