289505960

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{18049}}^1$

素因数の和:18461

約数の個数: 32

約数和(自身を含む): 653049000

約数和(自身を除く): 363543040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 16040, 18049, 36098, 72196, 90245, 144392, 180490, 360980, 721960, 7237649, 14475298, 28950596, 36188245, 57901192, 72376490, 144752980, 289505960]

約数ペア:

[(1, 289505960), (2, 144752980), (4, 72376490), (5, 57901192), (8, 36188245), (10, 28950596), (20, 14475298), (40, 7237649), (401, 721960), (802, 360980), (1604, 180490), (2005, 144392), (3208, 90245), (4010, 72196), (8020, 36098), (16040, 18049)]