18985902

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:617

約数の個数: 64

約数和(自身を含む): 44997120

約数和(自身を除く): 26011218

約数列:

[1, 2, 3, 6, 13, 19, 23, 26, 38, 39, 46, 57, 69, 78, 114, 138, 247, 299, 437, 494, 557, 598, 741, 874, 897, 1114, 1311, 1482, 1671, 1794, 2622, 3342, 5681, 7241, 10583, 11362, 12811, 14482, 17043, 21166, 21723, 25622, 31749, 34086, 38433, 43446, 63498, 76866, 137579, 166543, 243409, 275158, 333086, 412737, 486818, 499629, 730227, 825474, 999258, 1460454, 3164317, 6328634, 9492951, 18985902]

約数ペア:

[(1, 18985902), (2, 9492951), (3, 6328634), (6, 3164317), (13, 1460454), (19, 999258), (23, 825474), (26, 730227), (38, 499629), (39, 486818), (46, 412737), (57, 333086), (69, 275158), (78, 243409), (114, 166543), (138, 137579), (247, 76866), (299, 63498), (437, 43446), (494, 38433), (557, 34086), (598, 31749), (741, 25622), (874, 21723), (897, 21166), (1114, 17043), (1311, 14482), (1482, 12811), (1671, 11362), (1794, 10583), (2622, 7241), (3342, 5681)]