129801520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 312792480

約数和(自身を除く): 182990960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 97, 172, 194, 215, 344, 388, 389, 430, 485, 688, 776, 778, 860, 970, 1552, 1556, 1720, 1940, 1945, 3112, 3440, 3880, 3890, 4171, 6224, 7760, 7780, 8342, 15560, 16684, 16727, 20855, 31120, 33368, 33454, 37733, 41710, 66736, 66908, 75466, 83420, 83635, 133816, 150932, 166840, 167270, 188665, 267632, 301864, 333680, 334540, 377330, 603728, 669080, 754660, 1338160, 1509320, 1622519, 3018640, 3245038, 6490076, 8112595, 12980152, 16225190, 25960304, 32450380, 64900760, 129801520]

約数ペア:

[(1, 129801520), (2, 64900760), (4, 32450380), (5, 25960304), (8, 16225190), (10, 12980152), (16, 8112595), (20, 6490076), (40, 3245038), (43, 3018640), (80, 1622519), (86, 1509320), (97, 1338160), (172, 754660), (194, 669080), (215, 603728), (344, 377330), (388, 334540), (389, 333680), (430, 301864), (485, 267632), (688, 188665), (776, 167270), (778, 166840), (860, 150932), (970, 133816), (1552, 83635), (1556, 83420), (1720, 75466), (1940, 66908), (1945, 66736), (3112, 41710), (3440, 37733), (3880, 33454), (3890, 33368), (4171, 31120), (6224, 20855), (7760, 16727), (7780, 16684), (8342, 15560)]