18717255

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 35212320

約数和(自身を除く): 16495065

約数列:

[1, 3, 5, 9, 15, 17, 43, 45, 51, 85, 129, 153, 215, 255, 387, 569, 645, 731, 765, 1707, 1935, 2193, 2845, 3655, 5121, 6579, 8535, 9673, 10965, 24467, 25605, 29019, 32895, 48365, 73401, 87057, 122335, 145095, 220203, 367005, 415939, 435285, 1101015, 1247817, 2079695, 3743451, 6239085, 18717255]

約数ペア:

[(1, 18717255), (3, 6239085), (5, 3743451), (9, 2079695), (15, 1247817), (17, 1101015), (43, 435285), (45, 415939), (51, 367005), (85, 220203), (129, 145095), (153, 122335), (215, 87057), (255, 73401), (387, 48365), (569, 32895), (645, 29019), (731, 25605), (765, 24467), (1707, 10965), (1935, 9673), (2193, 8535), (2845, 6579), (3655, 5121)]