21000481515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1\times {\mathrm{6481}}^1$

素因数の和:6725

約数の個数: 96

約数和(自身を含む): 40771261440

約数和(自身を除く): 19770779925

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 145, 191, 195, 261, 377, 435, 573, 585, 955, 1131, 1305, 1719, 1885, 2483, 2865, 3393, 5539, 5655, 6481, 7449, 8595, 12415, 16617, 16965, 19443, 22347, 27695, 32405, 37245, 49851, 58329, 72007, 83085, 84253, 97215, 111735, 187949, 216021, 249255, 252759, 291645, 360035, 421265, 563847, 648063, 758277, 939745, 1080105, 1237871, 1263795, 1691541, 2443337, 2819235, 3240315, 3713613, 3791385, 6189355, 7330011, 8457705, 11140839, 12216685, 16092323, 18568065, 21990033, 35898259, 36650055, 48276969, 55704195, 80461615, 107694777, 109950165, 144830907, 179491295, 241384845, 323084331, 466677367, 538473885, 724154535, 1400032101, 1615421655, 2333386835, 4200096303, 7000160505, 21000481515]

約数ペア:

[(1, 21000481515), (3, 7000160505), (5, 4200096303), (9, 2333386835), (13, 1615421655), (15, 1400032101), (29, 724154535), (39, 538473885), (45, 466677367), (65, 323084331), (87, 241384845), (117, 179491295), (145, 144830907), (191, 109950165), (195, 107694777), (261, 80461615), (377, 55704195), (435, 48276969), (573, 36650055), (585, 35898259), (955, 21990033), (1131, 18568065), (1305, 16092323), (1719, 12216685), (1885, 11140839), (2483, 8457705), (2865, 7330011), (3393, 6189355), (5539, 3791385), (5655, 3713613), (6481, 3240315), (7449, 2819235), (8595, 2443337), (12415, 1691541), (16617, 1263795), (16965, 1237871), (19443, 1080105), (22347, 939745), (27695, 758277), (32405, 648063), (37245, 563847), (49851, 421265), (58329, 360035), (72007, 291645), (83085, 252759), (84253, 249255), (97215, 216021), (111735, 187949)]