208386490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{353}}^1$

素因数の和:631

約数の個数: 64

約数和(自身を含む): 428198400

約数和(自身を除く): 219811910

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 239, 247, 353, 478, 494, 706, 1195, 1235, 1765, 2390, 2470, 3107, 3530, 4541, 4589, 6214, 6707, 9082, 9178, 13414, 15535, 22705, 22945, 31070, 33535, 45410, 45890, 59033, 67070, 84367, 87191, 118066, 168734, 174382, 295165, 421835, 435955, 590330, 843670, 871910, 1096771, 1602973, 2193542, 3205946, 5483855, 8014865, 10967710, 16029730, 20838649, 41677298, 104193245, 208386490]

約数ペア:

[(1, 208386490), (2, 104193245), (5, 41677298), (10, 20838649), (13, 16029730), (19, 10967710), (26, 8014865), (38, 5483855), (65, 3205946), (95, 2193542), (130, 1602973), (190, 1096771), (239, 871910), (247, 843670), (353, 590330), (478, 435955), (494, 421835), (706, 295165), (1195, 174382), (1235, 168734), (1765, 118066), (2390, 87191), (2470, 84367), (3107, 67070), (3530, 59033), (4541, 45890), (4589, 45410), (6214, 33535), (6707, 31070), (9082, 22945), (9178, 22705), (13414, 15535)]