18998775

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{4967}}^1$

素因数の和:5000

約数の個数: 36

約数和(自身を含む): 36037872

約数和(自身を除く): 17039097

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 4967, 14901, 24835, 44703, 74505, 84439, 124175, 223515, 253317, 372525, 422195, 759951, 1117575, 1266585, 2110975, 3799755, 6332925, 18998775]

約数ペア:

[(1, 18998775), (3, 6332925), (5, 3799755), (9, 2110975), (15, 1266585), (17, 1117575), (25, 759951), (45, 422195), (51, 372525), (75, 253317), (85, 223515), (153, 124175), (225, 84439), (255, 74505), (425, 44703), (765, 24835), (1275, 14901), (3825, 4967)]