166720

素因数分解:

$2^6\times 5^1\times {\mathrm{521}}^1$

素因数の和:538

約数の個数: 28

約数和(自身を含む): 397764

約数和(自身を除く): 231044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 521, 1042, 2084, 2605, 4168, 5210, 8336, 10420, 16672, 20840, 33344, 41680, 83360, 166720]

約数ペア:

[(1, 166720), (2, 83360), (4, 41680), (5, 33344), (8, 20840), (10, 16672), (16, 10420), (20, 8336), (32, 5210), (40, 4168), (64, 2605), (80, 2084), (160, 1042), (320, 521)]