18870765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1789

約数の個数: 32

約数和(自身を含む): 32731776

約数和(自身を除く): 13861011

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 1721, 2193, 3655, 5163, 8605, 10965, 25815, 29257, 74003, 87771, 146285, 222009, 370015, 438855, 1110045, 1258051, 3774153, 6290255, 18870765]

約数ペア:

[(1, 18870765), (3, 6290255), (5, 3774153), (15, 1258051), (17, 1110045), (43, 438855), (51, 370015), (85, 222009), (129, 146285), (215, 87771), (255, 74003), (645, 29257), (731, 25815), (1721, 10965), (2193, 8605), (3655, 5163)]