256220890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1061}}^1$

素因数の和:1159

約数の個数: 64

約数和(自身を含む): 513838080

約数和(自身を除く): 257617190

約数列:

[1, 2, 5, 10, 19, 31, 38, 41, 62, 82, 95, 155, 190, 205, 310, 410, 589, 779, 1061, 1178, 1271, 1558, 2122, 2542, 2945, 3895, 5305, 5890, 6355, 7790, 10610, 12710, 20159, 24149, 32891, 40318, 43501, 48298, 65782, 87002, 100795, 120745, 164455, 201590, 217505, 241490, 328910, 435010, 624929, 826519, 1249858, 1348531, 1653038, 2697062, 3124645, 4132595, 6249290, 6742655, 8265190, 13485310, 25622089, 51244178, 128110445, 256220890]

約数ペア:

[(1, 256220890), (2, 128110445), (5, 51244178), (10, 25622089), (19, 13485310), (31, 8265190), (38, 6742655), (41, 6249290), (62, 4132595), (82, 3124645), (95, 2697062), (155, 1653038), (190, 1348531), (205, 1249858), (310, 826519), (410, 624929), (589, 435010), (779, 328910), (1061, 241490), (1178, 217505), (1271, 201590), (1558, 164455), (2122, 120745), (2542, 100795), (2945, 87002), (3895, 65782), (5305, 48298), (5890, 43501), (6355, 40318), (7790, 32891), (10610, 24149), (12710, 20159)]