638520597

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{2803}}^1$

素因数の和:2895

約数の個数: 64

約数和(自身を含む): 1130572800

約数和(自身を除く): 492052203

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 59, 99, 117, 143, 177, 297, 351, 429, 531, 649, 767, 1287, 1593, 1947, 2301, 2803, 3861, 5841, 6903, 8409, 8437, 17523, 20709, 25227, 25311, 30833, 36439, 75681, 75933, 92499, 109317, 165377, 227799, 277497, 327951, 400829, 496131, 832491, 983853, 1202487, 1488393, 1819147, 2149901, 3607461, 4465179, 5457441, 6449703, 10822383, 16372323, 19349109, 23648911, 49116969, 58047327, 70946733, 212840199, 638520597]

約数ペア:

[(1, 638520597), (3, 212840199), (9, 70946733), (11, 58047327), (13, 49116969), (27, 23648911), (33, 19349109), (39, 16372323), (59, 10822383), (99, 6449703), (117, 5457441), (143, 4465179), (177, 3607461), (297, 2149901), (351, 1819147), (429, 1488393), (531, 1202487), (649, 983853), (767, 832491), (1287, 496131), (1593, 400829), (1947, 327951), (2301, 277497), (2803, 227799), (3861, 165377), (5841, 109317), (6903, 92499), (8409, 75933), (8437, 75681), (17523, 36439), (20709, 30833), (25227, 25311)]