1781831324

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{257639}}^1$

素因数の和:257682

約数の個数: 48

約数和(自身を含む): 4039795200

約数和(自身を除く): 2257963876

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 3458, 6916, 257639, 515278, 1030556, 1803473, 3349307, 3606946, 4895141, 6698614, 7213892, 9790282, 13397228, 19580564, 23445149, 34265987, 46890298, 63636833, 68531974, 93780596, 127273666, 137063948, 254547332, 445457831, 890915662, 1781831324]

約数ペア:

[(1, 1781831324), (2, 890915662), (4, 445457831), (7, 254547332), (13, 137063948), (14, 127273666), (19, 93780596), (26, 68531974), (28, 63636833), (38, 46890298), (52, 34265987), (76, 23445149), (91, 19580564), (133, 13397228), (182, 9790282), (247, 7213892), (266, 6698614), (364, 4895141), (494, 3606946), (532, 3349307), (988, 1803473), (1729, 1030556), (3458, 515278), (6916, 257639)]