81797940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64919}}^1$

素因数の和:64941

約数の個数: 72

約数和(自身を含む): 283570560

約数和(自身を除く): 201772620

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64919, 129838, 194757, 259676, 324595, 389514, 454433, 584271, 649190, 779028, 908866, 973785, 1168542, 1298380, 1363299, 1817732, 1947570, 2272165, 2337084, 2726598, 2921355, 3895140, 4089897, 4544330, 5453196, 5842710, 6816495, 8179794, 9088660, 11685420, 13632990, 16359588, 20449485, 27265980, 40898970, 81797940]

約数ペア:

[(1, 81797940), (2, 40898970), (3, 27265980), (4, 20449485), (5, 16359588), (6, 13632990), (7, 11685420), (9, 9088660), (10, 8179794), (12, 6816495), (14, 5842710), (15, 5453196), (18, 4544330), (20, 4089897), (21, 3895140), (28, 2921355), (30, 2726598), (35, 2337084), (36, 2272165), (42, 1947570), (45, 1817732), (60, 1363299), (63, 1298380), (70, 1168542), (84, 973785), (90, 908866), (105, 779028), (126, 649190), (140, 584271), (180, 454433), (210, 389514), (252, 324595), (315, 259676), (420, 194757), (630, 129838), (1260, 64919)]