640866120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{27961}}^1$

素因数の和:28166

約数の個数: 64

約数和(自身を含む): 1932733440

約数和(自身を除く): 1291867320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 191, 382, 573, 764, 955, 1146, 1528, 1910, 2292, 2865, 3820, 4584, 5730, 7640, 11460, 22920, 27961, 55922, 83883, 111844, 139805, 167766, 223688, 279610, 335532, 419415, 559220, 671064, 838830, 1118440, 1677660, 3355320, 5340551, 10681102, 16021653, 21362204, 26702755, 32043306, 42724408, 53405510, 64086612, 80108265, 106811020, 128173224, 160216530, 213622040, 320433060, 640866120]

約数ペア:

[(1, 640866120), (2, 320433060), (3, 213622040), (4, 160216530), (5, 128173224), (6, 106811020), (8, 80108265), (10, 64086612), (12, 53405510), (15, 42724408), (20, 32043306), (24, 26702755), (30, 21362204), (40, 16021653), (60, 10681102), (120, 5340551), (191, 3355320), (382, 1677660), (573, 1118440), (764, 838830), (955, 671064), (1146, 559220), (1528, 419415), (1910, 335532), (2292, 279610), (2865, 223688), (3820, 167766), (4584, 139805), (5730, 111844), (7640, 83883), (11460, 55922), (22920, 27961)]