256796820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{203807}}^1$

素因数の和:203829

約数の個数: 72

約数和(自身を含む): 890233344

約数和(自身を除く): 633436524

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 203807, 407614, 611421, 815228, 1019035, 1222842, 1426649, 1834263, 2038070, 2445684, 2853298, 3057105, 3668526, 4076140, 4279947, 5706596, 6114210, 7133245, 7337052, 8559894, 9171315, 12228420, 12839841, 14266490, 17119788, 18342630, 21399735, 25679682, 28532980, 36685260, 42799470, 51359364, 64199205, 85598940, 128398410, 256796820]

約数ペア:

[(1, 256796820), (2, 128398410), (3, 85598940), (4, 64199205), (5, 51359364), (6, 42799470), (7, 36685260), (9, 28532980), (10, 25679682), (12, 21399735), (14, 18342630), (15, 17119788), (18, 14266490), (20, 12839841), (21, 12228420), (28, 9171315), (30, 8559894), (35, 7337052), (36, 7133245), (42, 6114210), (45, 5706596), (60, 4279947), (63, 4076140), (70, 3668526), (84, 3057105), (90, 2853298), (105, 2445684), (126, 2038070), (140, 1834263), (180, 1426649), (210, 1222842), (252, 1019035), (315, 815228), (420, 611421), (630, 407614), (1260, 203807)]