19886356

素因数分解:

$2^2\times 7^2\times {\mathrm{241}}^1\times {\mathrm{421}}^1$

素因数の和:680

約数の個数: 36

約数和(自身を含む): 40747476

約数和(自身を除く): 20861120

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 241, 421, 482, 842, 964, 1684, 1687, 2947, 3374, 5894, 6748, 11788, 11809, 20629, 23618, 41258, 47236, 82516, 101461, 202922, 405844, 710227, 1420454, 2840908, 4971589, 9943178, 19886356]

約数ペア:

[(1, 19886356), (2, 9943178), (4, 4971589), (7, 2840908), (14, 1420454), (28, 710227), (49, 405844), (98, 202922), (196, 101461), (241, 82516), (421, 47236), (482, 41258), (842, 23618), (964, 20629), (1684, 11809), (1687, 11788), (2947, 6748), (3374, 5894)]