19970060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2111}}^1$

素因数の和:2174

約数の個数: 48

約数和(自身を含む): 46835712

約数和(自身を除く): 26865652

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2111, 2365, 4222, 4730, 8444, 9460, 10555, 21110, 23221, 42220, 46442, 90773, 92884, 116105, 181546, 232210, 363092, 453865, 464420, 907730, 998503, 1815460, 1997006, 3994012, 4992515, 9985030, 19970060]

約数ペア:

[(1, 19970060), (2, 9985030), (4, 4992515), (5, 3994012), (10, 1997006), (11, 1815460), (20, 998503), (22, 907730), (43, 464420), (44, 453865), (55, 363092), (86, 232210), (110, 181546), (172, 116105), (215, 92884), (220, 90773), (430, 46442), (473, 42220), (860, 23221), (946, 21110), (1892, 10555), (2111, 9460), (2365, 8444), (4222, 4730)]