28178244

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 73993920

約数和(自身を除く): 45815676

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 109, 129, 167, 172, 218, 258, 327, 334, 387, 436, 501, 516, 654, 668, 774, 981, 1002, 1308, 1503, 1548, 1962, 2004, 3006, 3924, 4687, 6012, 7181, 9374, 14061, 14362, 18203, 18748, 21543, 28122, 28724, 36406, 42183, 43086, 54609, 56244, 64629, 72812, 84366, 86172, 109218, 129258, 163827, 168732, 218436, 258516, 327654, 655308, 782729, 1565458, 2348187, 3130916, 4696374, 7044561, 9392748, 14089122, 28178244]

約数ペア:

[(1, 28178244), (2, 14089122), (3, 9392748), (4, 7044561), (6, 4696374), (9, 3130916), (12, 2348187), (18, 1565458), (36, 782729), (43, 655308), (86, 327654), (109, 258516), (129, 218436), (167, 168732), (172, 163827), (218, 129258), (258, 109218), (327, 86172), (334, 84366), (387, 72812), (436, 64629), (501, 56244), (516, 54609), (654, 43086), (668, 42183), (774, 36406), (981, 28724), (1002, 28122), (1308, 21543), (1503, 18748), (1548, 18203), (1962, 14362), (2004, 14061), (3006, 9374), (3924, 7181), (4687, 6012)]