21195330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54347}}^1$

素因数の和:54370

約数の個数: 32

約数和(自身を含む): 54782784

約数和(自身を除く): 33587454

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54347, 108694, 163041, 271735, 326082, 543470, 706511, 815205, 1413022, 1630410, 2119533, 3532555, 4239066, 7065110, 10597665, 21195330]

約数ペア:

[(1, 21195330), (2, 10597665), (3, 7065110), (5, 4239066), (6, 3532555), (10, 2119533), (13, 1630410), (15, 1413022), (26, 815205), (30, 706511), (39, 543470), (65, 326082), (78, 271735), (130, 163041), (195, 108694), (390, 54347)]