201819425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 277273920

約数和(自身を除く): 75454495

約数列:

[1, 5, 19, 25, 41, 43, 95, 205, 215, 241, 475, 779, 817, 1025, 1075, 1205, 1763, 3895, 4085, 4579, 6025, 8815, 9881, 10363, 19475, 20425, 22895, 33497, 44075, 49405, 51815, 114475, 167485, 187739, 196897, 247025, 259075, 424883, 837425, 938695, 984485, 2124415, 4693475, 4922425, 8072777, 10622075, 40363885, 201819425]

約数ペア:

[(1, 201819425), (5, 40363885), (19, 10622075), (25, 8072777), (41, 4922425), (43, 4693475), (95, 2124415), (205, 984485), (215, 938695), (241, 837425), (475, 424883), (779, 259075), (817, 247025), (1025, 196897), (1075, 187739), (1205, 167485), (1763, 114475), (3895, 51815), (4085, 49405), (4579, 44075), (6025, 33497), (8815, 22895), (9881, 20425), (10363, 19475)]