287001520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{275963}}^1$

素因数の和:275989

約数の個数: 40

約数和(自身を含む): 718610256

約数和(自身を除く): 431608736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 275963, 551926, 1103852, 1379815, 2207704, 2759630, 3587519, 4415408, 5519260, 7175038, 11038520, 14350076, 17937595, 22077040, 28700152, 35875190, 57400304, 71750380, 143500760, 287001520]

約数ペア:

[(1, 287001520), (2, 143500760), (4, 71750380), (5, 57400304), (8, 35875190), (10, 28700152), (13, 22077040), (16, 17937595), (20, 14350076), (26, 11038520), (40, 7175038), (52, 5519260), (65, 4415408), (80, 3587519), (104, 2759630), (130, 2207704), (208, 1379815), (260, 1103852), (520, 551926), (1040, 275963)]