1256222780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{811}}^1\times {\mathrm{1889}}^1$

素因数の和:2750

約数の個数: 48

約数和(自身を含む): 2707175520

約数和(自身を除く): 1450952740

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 811, 820, 1622, 1889, 3244, 3778, 4055, 7556, 8110, 9445, 16220, 18890, 33251, 37780, 66502, 77449, 133004, 154898, 166255, 309796, 332510, 387245, 665020, 774490, 1531979, 1548980, 3063958, 6127916, 7659895, 15319790, 30639580, 62811139, 125622278, 251244556, 314055695, 628111390, 1256222780]

約数ペア:

[(1, 1256222780), (2, 628111390), (4, 314055695), (5, 251244556), (10, 125622278), (20, 62811139), (41, 30639580), (82, 15319790), (164, 7659895), (205, 6127916), (410, 3063958), (811, 1548980), (820, 1531979), (1622, 774490), (1889, 665020), (3244, 387245), (3778, 332510), (4055, 309796), (7556, 166255), (8110, 154898), (9445, 133004), (16220, 77449), (18890, 66502), (33251, 37780)]