2005909420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{128749}}^1$

素因数の和:128818

約数の個数: 48

約数和(自身を含む): 4542300000

約数和(自身を除く): 2536390580

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, 128749, 257498, 514996, 643745, 1287490, 2446231, 2574980, 4892462, 5278709, 9784924, 10557418, 12231155, 21114836, 24462310, 26393545, 48924620, 52787090, 100295471, 105574180, 200590942, 401181884, 501477355, 1002954710, 2005909420]

約数ペア:

[(1, 2005909420), (2, 1002954710), (4, 501477355), (5, 401181884), (10, 200590942), (19, 105574180), (20, 100295471), (38, 52787090), (41, 48924620), (76, 26393545), (82, 24462310), (95, 21114836), (164, 12231155), (190, 10557418), (205, 9784924), (380, 5278709), (410, 4892462), (779, 2574980), (820, 2446231), (1558, 1287490), (3116, 643745), (3895, 514996), (7790, 257498), (15580, 128749)]