1781450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 48

約数和(自身を含む): 3749760

約数和(自身を除く): 1968310

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 79, 82, 110, 158, 205, 275, 395, 410, 451, 550, 790, 869, 902, 1025, 1738, 1975, 2050, 2255, 3239, 3950, 4345, 4510, 6478, 8690, 11275, 16195, 21725, 22550, 32390, 35629, 43450, 71258, 80975, 161950, 178145, 356290, 890725, 1781450]

約数ペア:

[(1, 1781450), (2, 890725), (5, 356290), (10, 178145), (11, 161950), (22, 80975), (25, 71258), (41, 43450), (50, 35629), (55, 32390), (79, 22550), (82, 21725), (110, 16195), (158, 11275), (205, 8690), (275, 6478), (395, 4510), (410, 4345), (451, 3950), (550, 3239), (790, 2255), (869, 2050), (902, 1975), (1025, 1738)]