18975299

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 23392800

約数和(自身を除く): 4417501

約数列:

[1, 7, 23, 49, 113, 149, 161, 791, 1043, 1127, 2599, 3427, 5537, 7301, 16837, 18193, 23989, 117859, 127351, 167923, 387251, 825013, 2710757, 18975299]

約数ペア:

[(1, 18975299), (7, 2710757), (23, 825013), (49, 387251), (113, 167923), (149, 127351), (161, 117859), (791, 23989), (1043, 18193), (1127, 16837), (2599, 7301), (3427, 5537)]