209399505

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{383}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 396361728

約数和(自身を除く): 186962223

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 127, 205, 287, 381, 383, 615, 635, 861, 889, 1149, 1435, 1905, 1915, 2667, 2681, 4305, 4445, 5207, 5745, 8043, 13335, 13405, 15621, 15703, 26035, 36449, 40215, 47109, 48641, 78105, 78515, 109347, 109921, 145923, 182245, 235545, 243205, 329763, 340487, 546735, 549605, 729615, 1021461, 1648815, 1702435, 1994281, 5107305, 5982843, 9971405, 13959967, 29914215, 41879901, 69799835, 209399505]

約数ペア:

[(1, 209399505), (3, 69799835), (5, 41879901), (7, 29914215), (15, 13959967), (21, 9971405), (35, 5982843), (41, 5107305), (105, 1994281), (123, 1702435), (127, 1648815), (205, 1021461), (287, 729615), (381, 549605), (383, 546735), (615, 340487), (635, 329763), (861, 243205), (889, 235545), (1149, 182245), (1435, 145923), (1905, 109921), (1915, 109347), (2667, 78515), (2681, 78105), (4305, 48641), (4445, 47109), (5207, 40215), (5745, 36449), (8043, 26035), (13335, 15703), (13405, 15621)]