1285334420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{82499}}^1$

素因数の和:82568

約数の個数: 48

約数和(自身を含む): 2910600000

約数和(自身を除く): 1625265580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1558, 3116, 3895, 7790, 15580, 82499, 164998, 329996, 412495, 824990, 1567481, 1649980, 3134962, 3382459, 6269924, 6764918, 7837405, 13529836, 15674810, 16912295, 31349620, 33824590, 64266721, 67649180, 128533442, 257066884, 321333605, 642667210, 1285334420]

約数ペア:

[(1, 1285334420), (2, 642667210), (4, 321333605), (5, 257066884), (10, 128533442), (19, 67649180), (20, 64266721), (38, 33824590), (41, 31349620), (76, 16912295), (82, 15674810), (95, 13529836), (164, 7837405), (190, 6764918), (205, 6269924), (380, 3382459), (410, 3134962), (779, 1649980), (820, 1567481), (1558, 824990), (3116, 412495), (3895, 329996), (7790, 164998), (15580, 82499)]