320961520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{641}}^1$

素因数の和:1234

約数の個数: 80

約数和(自身を含む): 816778080

約数和(自身を除く): 495816560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 569, 641, 880, 1138, 1282, 2276, 2564, 2845, 3205, 4552, 5128, 5690, 6259, 6410, 7051, 9104, 10256, 11380, 12518, 12820, 14102, 22760, 25036, 25640, 28204, 31295, 35255, 45520, 50072, 51280, 56408, 62590, 70510, 100144, 112816, 125180, 141020, 250360, 282040, 364729, 500720, 564080, 729458, 1458916, 1823645, 2917832, 3647290, 4012019, 5835664, 7294580, 8024038, 14589160, 16048076, 20060095, 29178320, 32096152, 40120190, 64192304, 80240380, 160480760, 320961520]

約数ペア:

[(1, 320961520), (2, 160480760), (4, 80240380), (5, 64192304), (8, 40120190), (10, 32096152), (11, 29178320), (16, 20060095), (20, 16048076), (22, 14589160), (40, 8024038), (44, 7294580), (55, 5835664), (80, 4012019), (88, 3647290), (110, 2917832), (176, 1823645), (220, 1458916), (440, 729458), (569, 564080), (641, 500720), (880, 364729), (1138, 282040), (1282, 250360), (2276, 141020), (2564, 125180), (2845, 112816), (3205, 100144), (4552, 70510), (5128, 62590), (5690, 56408), (6259, 51280), (6410, 50072), (7051, 45520), (9104, 35255), (10256, 31295), (11380, 28204), (12518, 25640), (12820, 25036), (14102, 22760)]