66857690

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1747}}^1$

素因数の和:1886

約数の個数: 32

約数和(自身を含む): 124597440

約数和(自身を除く): 57739750

約数列:

[1, 2, 5, 10, 43, 86, 89, 178, 215, 430, 445, 890, 1747, 3494, 3827, 7654, 8735, 17470, 19135, 38270, 75121, 150242, 155483, 310966, 375605, 751210, 777415, 1554830, 6685769, 13371538, 33428845, 66857690]

約数ペア:

[(1, 66857690), (2, 33428845), (5, 13371538), (10, 6685769), (43, 1554830), (86, 777415), (89, 751210), (178, 375605), (215, 310966), (430, 155483), (445, 150242), (890, 75121), (1747, 38270), (3494, 19135), (3827, 17470), (7654, 8735)]