66964760

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38933}}^1$

素因数の和:38987

約数の個数: 32

約数和(自身を含む): 154178640

約数和(自身を除く): 87213880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38933, 77866, 155732, 194665, 311464, 389330, 778660, 1557320, 1674119, 3348238, 6696476, 8370595, 13392952, 16741190, 33482380, 66964760]

約数ペア:

[(1, 66964760), (2, 33482380), (4, 16741190), (5, 13392952), (8, 8370595), (10, 6696476), (20, 3348238), (40, 1674119), (43, 1557320), (86, 778660), (172, 389330), (215, 311464), (344, 194665), (430, 155732), (860, 77866), (1720, 38933)]