81972930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{210187}}^1$

素因数の和:210210

約数の個数: 32

約数和(自身を含む): 211869504

約数和(自身を除く): 129896574

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 210187, 420374, 630561, 1050935, 1261122, 2101870, 2732431, 3152805, 5464862, 6305610, 8197293, 13662155, 16394586, 27324310, 40986465, 81972930]

約数ペア:

[(1, 81972930), (2, 40986465), (3, 27324310), (5, 16394586), (6, 13662155), (10, 8197293), (13, 6305610), (15, 5464862), (26, 3152805), (30, 2732431), (39, 2101870), (65, 1261122), (78, 1050935), (130, 630561), (195, 420374), (390, 210187)]