20527845

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{199}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 37161600

約数和(自身を除く): 16633755

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 195, 199, 299, 345, 529, 597, 897, 995, 1495, 1587, 2587, 2645, 2985, 4485, 4577, 6877, 7761, 7935, 12935, 13731, 20631, 22885, 34385, 38805, 59501, 68655, 103155, 105271, 178503, 297505, 315813, 526355, 892515, 1368523, 1579065, 4105569, 6842615, 20527845]

約数ペア:

[(1, 20527845), (3, 6842615), (5, 4105569), (13, 1579065), (15, 1368523), (23, 892515), (39, 526355), (65, 315813), (69, 297505), (115, 178503), (195, 105271), (199, 103155), (299, 68655), (345, 59501), (529, 38805), (597, 34385), (897, 22885), (995, 20631), (1495, 13731), (1587, 12935), (2587, 7935), (2645, 7761), (2985, 6877), (4485, 4577)]