20354860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 44396352

約数和(自身を除く): 24041492

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 103, 164, 205, 206, 241, 410, 412, 482, 515, 820, 964, 1030, 1205, 2060, 2410, 4223, 4820, 8446, 9881, 16892, 19762, 21115, 24823, 39524, 42230, 49405, 49646, 84460, 98810, 99292, 124115, 197620, 248230, 496460, 1017743, 2035486, 4070972, 5088715, 10177430, 20354860]

約数ペア:

[(1, 20354860), (2, 10177430), (4, 5088715), (5, 4070972), (10, 2035486), (20, 1017743), (41, 496460), (82, 248230), (103, 197620), (164, 124115), (205, 99292), (206, 98810), (241, 84460), (410, 49646), (412, 49405), (482, 42230), (515, 39524), (820, 24823), (964, 21115), (1030, 19762), (1205, 16892), (2060, 9881), (2410, 8446), (4223, 4820)]