205428990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{526741}}^1$

素因数の和:526764

約数の個数: 32

約数和(自身を含む): 530955936

約数和(自身を除く): 325526946

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 526741, 1053482, 1580223, 2633705, 3160446, 5267410, 6847633, 7901115, 13695266, 15802230, 20542899, 34238165, 41085798, 68476330, 102714495, 205428990]

約数ペア:

[(1, 205428990), (2, 102714495), (3, 68476330), (5, 41085798), (6, 34238165), (10, 20542899), (13, 15802230), (15, 13695266), (26, 7901115), (30, 6847633), (39, 5267410), (65, 3160446), (78, 2633705), (130, 1580223), (195, 1053482), (390, 526741)]