123764240

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 298574640

約数和(自身を除く): 174810400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 97, 164, 194, 205, 328, 388, 389, 410, 485, 656, 776, 778, 820, 970, 1552, 1556, 1640, 1940, 1945, 3112, 3280, 3880, 3890, 3977, 6224, 7760, 7780, 7954, 15560, 15908, 15949, 19885, 31120, 31816, 31898, 37733, 39770, 63632, 63796, 75466, 79540, 79745, 127592, 150932, 159080, 159490, 188665, 255184, 301864, 318160, 318980, 377330, 603728, 637960, 754660, 1275920, 1509320, 1547053, 3018640, 3094106, 6188212, 7735265, 12376424, 15470530, 24752848, 30941060, 61882120, 123764240]

約数ペア:

[(1, 123764240), (2, 61882120), (4, 30941060), (5, 24752848), (8, 15470530), (10, 12376424), (16, 7735265), (20, 6188212), (40, 3094106), (41, 3018640), (80, 1547053), (82, 1509320), (97, 1275920), (164, 754660), (194, 637960), (205, 603728), (328, 377330), (388, 318980), (389, 318160), (410, 301864), (485, 255184), (656, 188665), (776, 159490), (778, 159080), (820, 150932), (970, 127592), (1552, 79745), (1556, 79540), (1640, 75466), (1940, 63796), (1945, 63632), (3112, 39770), (3280, 37733), (3880, 31898), (3890, 31816), (3977, 31120), (6224, 19885), (7760, 15949), (7780, 15908), (7954, 15560)]