28086040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:532

約数の個数: 64

約数和(自身を含む): 67728960

約数和(自身を除く): 39642920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 103, 136, 170, 206, 340, 401, 412, 515, 680, 802, 824, 1030, 1604, 1751, 2005, 2060, 3208, 3502, 4010, 4120, 6817, 7004, 8020, 8755, 13634, 14008, 16040, 17510, 27268, 34085, 35020, 41303, 54536, 68170, 70040, 82606, 136340, 165212, 206515, 272680, 330424, 413030, 702151, 826060, 1404302, 1652120, 2808604, 3510755, 5617208, 7021510, 14043020, 28086040]

約数ペア:

[(1, 28086040), (2, 14043020), (4, 7021510), (5, 5617208), (8, 3510755), (10, 2808604), (17, 1652120), (20, 1404302), (34, 826060), (40, 702151), (68, 413030), (85, 330424), (103, 272680), (136, 206515), (170, 165212), (206, 136340), (340, 82606), (401, 70040), (412, 68170), (515, 54536), (680, 41303), (802, 35020), (824, 34085), (1030, 27268), (1604, 17510), (1751, 16040), (2005, 14008), (2060, 13634), (3208, 8755), (3502, 8020), (4010, 7004), (4120, 6817)]