990243541

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{1619}}^1$

素因数の和:1809

約数の個数: 32

約数和(自身を含む): 1231718400

約数和(自身を除く): 241474859

約数列:

[1, 7, 23, 29, 131, 161, 203, 667, 917, 1619, 3013, 3799, 4669, 11333, 21091, 26593, 37237, 46951, 87377, 212089, 260659, 328657, 611639, 1079873, 1484623, 4878047, 6150581, 7559111, 34146329, 43054067, 141463363, 990243541]

約数ペア:

[(1, 990243541), (7, 141463363), (23, 43054067), (29, 34146329), (131, 7559111), (161, 6150581), (203, 4878047), (667, 1484623), (917, 1079873), (1619, 611639), (3013, 328657), (3799, 260659), (4669, 212089), (11333, 87377), (21091, 46951), (26593, 37237)]