639730038

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{227}}^1\times {\mathrm{419}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 1378944000

約数和(自身を除く): 739213962

約数列:

[1, 2, 3, 6, 19, 38, 57, 59, 114, 118, 177, 227, 354, 419, 454, 681, 838, 1121, 1257, 1362, 2242, 2514, 3363, 4313, 6726, 7961, 8626, 12939, 13393, 15922, 23883, 24721, 25878, 26786, 40179, 47766, 49442, 74163, 80358, 95113, 148326, 190226, 254467, 285339, 469699, 508934, 570678, 763401, 939398, 1409097, 1526802, 1807147, 2818194, 3614294, 5421441, 5611667, 10842882, 11223334, 16835001, 33670002, 106621673, 213243346, 319865019, 639730038]

約数ペア:

[(1, 639730038), (2, 319865019), (3, 213243346), (6, 106621673), (19, 33670002), (38, 16835001), (57, 11223334), (59, 10842882), (114, 5611667), (118, 5421441), (177, 3614294), (227, 2818194), (354, 1807147), (419, 1526802), (454, 1409097), (681, 939398), (838, 763401), (1121, 570678), (1257, 508934), (1362, 469699), (2242, 285339), (2514, 254467), (3363, 190226), (4313, 148326), (6726, 95113), (7961, 80358), (8626, 74163), (12939, 49442), (13393, 47766), (15922, 40179), (23883, 26786), (24721, 25878)]