2018971220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{197551}}^1$

素因数の和:197640

約数の個数: 48

約数和(自身を含む): 4911932928

約数和(自身を除く): 2892961708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2555, 5110, 10220, 197551, 395102, 790204, 987755, 1382857, 1975510, 2765714, 3951020, 5531428, 6914285, 13828570, 14421223, 27657140, 28842446, 57684892, 72106115, 100948561, 144212230, 201897122, 288424460, 403794244, 504742805, 1009485610, 2018971220]

約数ペア:

[(1, 2018971220), (2, 1009485610), (4, 504742805), (5, 403794244), (7, 288424460), (10, 201897122), (14, 144212230), (20, 100948561), (28, 72106115), (35, 57684892), (70, 28842446), (73, 27657140), (140, 14421223), (146, 13828570), (292, 6914285), (365, 5531428), (511, 3951020), (730, 2765714), (1022, 1975510), (1460, 1382857), (2044, 987755), (2555, 790204), (5110, 395102), (10220, 197551)]