138715400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{7793}}^1$

素因数の和:7898

約数の個数: 48

約数和(自身を含む): 326178900

約数和(自身を除く): 187463500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1780, 2225, 3560, 4450, 7793, 8900, 15586, 17800, 31172, 38965, 62344, 77930, 155860, 194825, 311720, 389650, 693577, 779300, 1387154, 1558600, 2774308, 3467885, 5548616, 6935770, 13871540, 17339425, 27743080, 34678850, 69357700, 138715400]

約数ペア:

[(1, 138715400), (2, 69357700), (4, 34678850), (5, 27743080), (8, 17339425), (10, 13871540), (20, 6935770), (25, 5548616), (40, 3467885), (50, 2774308), (89, 1558600), (100, 1387154), (178, 779300), (200, 693577), (356, 389650), (445, 311720), (712, 194825), (890, 155860), (1780, 77930), (2225, 62344), (3560, 38965), (4450, 31172), (7793, 17800), (8900, 15586)]