21912410

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2309}}^1$

素因数の和:2402

約数の個数: 32

約数和(自身を含む): 43076880

約数和(自身を除く): 21164470

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 2309, 4618, 4745, 9490, 11545, 23090, 30017, 60034, 150085, 168557, 300170, 337114, 842785, 1685570, 2191241, 4382482, 10956205, 21912410]

約数ペア:

[(1, 21912410), (2, 10956205), (5, 4382482), (10, 2191241), (13, 1685570), (26, 842785), (65, 337114), (73, 300170), (130, 168557), (146, 150085), (365, 60034), (730, 30017), (949, 23090), (1898, 11545), (2309, 9490), (4618, 4745)]