2780281980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{6359}}^1$

素因数の和:6728

約数の個数: 144

約数和(自身を含む): 9667607040

約数和(自身を除く): 6887325060

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, 347, 420, 630, 694, 1041, 1260, 1388, 1735, 2082, 2429, 3123, 3470, 4164, 4858, 5205, 6246, 6359, 6940, 7287, 9716, 10410, 12145, 12492, 12718, 14574, 15615, 19077, 20820, 21861, 24290, 25436, 29148, 31230, 31795, 36435, 38154, 43722, 44513, 48580, 57231, 62460, 63590, 72870, 76308, 87444, 89026, 95385, 109305, 114462, 127180, 133539, 145740, 178052, 190770, 218610, 222565, 228924, 267078, 286155, 381540, 400617, 437220, 445130, 534156, 572310, 667695, 801234, 890260, 1144620, 1335390, 1602468, 2003085, 2206573, 2670780, 4006170, 4413146, 6619719, 8012340, 8826292, 11032865, 13239438, 15446011, 19859157, 22065730, 26478876, 30892022, 33098595, 39718314, 44131460, 46338033, 61784044, 66197190, 77230055, 79436628, 92676066, 99295785, 132394380, 139014099, 154460110, 185352132, 198591570, 231690165, 278028198, 308920220, 397183140, 463380330, 556056396, 695070495, 926760660, 1390140990, 2780281980]

約数ペア:

[(1, 2780281980), (2, 1390140990), (3, 926760660), (4, 695070495), (5, 556056396), (6, 463380330), (7, 397183140), (9, 308920220), (10, 278028198), (12, 231690165), (14, 198591570), (15, 185352132), (18, 154460110), (20, 139014099), (21, 132394380), (28, 99295785), (30, 92676066), (35, 79436628), (36, 77230055), (42, 66197190), (45, 61784044), (60, 46338033), (63, 44131460), (70, 39718314), (84, 33098595), (90, 30892022), (105, 26478876), (126, 22065730), (140, 19859157), (180, 15446011), (210, 13239438), (252, 11032865), (315, 8826292), (347, 8012340), (420, 6619719), (630, 4413146), (694, 4006170), (1041, 2670780), (1260, 2206573), (1388, 2003085), (1735, 1602468), (2082, 1335390), (2429, 1144620), (3123, 890260), (3470, 801234), (4164, 667695), (4858, 572310), (5205, 534156), (6246, 445130), (6359, 437220), (6940, 400617), (7287, 381540), (9716, 286155), (10410, 267078), (12145, 228924), (12492, 222565), (12718, 218610), (14574, 190770), (15615, 178052), (19077, 145740), (20820, 133539), (21861, 127180), (24290, 114462), (25436, 109305), (29148, 95385), (31230, 89026), (31795, 87444), (36435, 76308), (38154, 72870), (43722, 63590), (44513, 62460), (48580, 57231)]