20082620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1289}}^1$

素因数の和:1358

約数の個数: 48

約数和(自身を含む): 45511200

約数和(自身を除く): 25428580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1289, 1558, 2578, 3116, 3895, 5156, 6445, 7790, 12890, 15580, 24491, 25780, 48982, 52849, 97964, 105698, 122455, 211396, 244910, 264245, 489820, 528490, 1004131, 1056980, 2008262, 4016524, 5020655, 10041310, 20082620]

約数ペア:

[(1, 20082620), (2, 10041310), (4, 5020655), (5, 4016524), (10, 2008262), (19, 1056980), (20, 1004131), (38, 528490), (41, 489820), (76, 264245), (82, 244910), (95, 211396), (164, 122455), (190, 105698), (205, 97964), (380, 52849), (410, 48982), (779, 25780), (820, 24491), (1289, 15580), (1558, 12890), (2578, 7790), (3116, 6445), (3895, 5156)]