81764840

素因数分解:

$2^3\times 5^1\times {\mathrm{617}}^1\times {\mathrm{3313}}^1$

素因数の和:3941

約数の個数: 32

約数和(自身を含む): 184324680

約数和(自身を除く): 102559840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 617, 1234, 2468, 3085, 3313, 4936, 6170, 6626, 12340, 13252, 16565, 24680, 26504, 33130, 66260, 132520, 2044121, 4088242, 8176484, 10220605, 16352968, 20441210, 40882420, 81764840]

約数ペア:

[(1, 81764840), (2, 40882420), (4, 20441210), (5, 16352968), (8, 10220605), (10, 8176484), (20, 4088242), (40, 2044121), (617, 132520), (1234, 66260), (2468, 33130), (3085, 26504), (3313, 24680), (4936, 16565), (6170, 13252), (6626, 12340)]