21167192840

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{733}}^1\times {\mathrm{1723}}^1$

素因数の和:2886

約数の個数: 64

約数和(自身を含む): 47832724800

約数和(自身を除く): 26665531960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 733, 838, 1466, 1676, 1723, 2095, 2932, 3352, 3446, 3665, 4190, 5864, 6892, 7330, 8380, 8615, 13784, 14660, 16760, 17230, 29320, 34460, 68920, 307127, 614254, 721937, 1228508, 1262959, 1443874, 1535635, 2457016, 2525918, 2887748, 3071270, 3609685, 5051836, 5775496, 6142540, 6314795, 7219370, 10103672, 12285080, 12629590, 14438740, 25259180, 28877480, 50518360, 529179821, 1058359642, 2116719284, 2645899105, 4233438568, 5291798210, 10583596420, 21167192840]

約数ペア:

[(1, 21167192840), (2, 10583596420), (4, 5291798210), (5, 4233438568), (8, 2645899105), (10, 2116719284), (20, 1058359642), (40, 529179821), (419, 50518360), (733, 28877480), (838, 25259180), (1466, 14438740), (1676, 12629590), (1723, 12285080), (2095, 10103672), (2932, 7219370), (3352, 6314795), (3446, 6142540), (3665, 5775496), (4190, 5051836), (5864, 3609685), (6892, 3071270), (7330, 2887748), (8380, 2525918), (8615, 2457016), (13784, 1535635), (14660, 1443874), (16760, 1262959), (17230, 1228508), (29320, 721937), (34460, 614254), (68920, 307127)]