2778840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:134

約数の個数: 128

約数和(自身を含む): 9676800

約数和(自身を除く): 6897960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 83, 90, 93, 108, 120, 124, 135, 155, 166, 180, 186, 216, 248, 249, 270, 279, 310, 332, 360, 372, 415, 465, 498, 540, 558, 620, 664, 744, 747, 830, 837, 930, 996, 1080, 1116, 1240, 1245, 1395, 1494, 1660, 1674, 1860, 1992, 2232, 2241, 2490, 2573, 2790, 2988, 3320, 3348, 3720, 3735, 4185, 4482, 4980, 5146, 5580, 5976, 6696, 7470, 7719, 8370, 8964, 9960, 10292, 11160, 11205, 12865, 14940, 15438, 16740, 17928, 20584, 22410, 23157, 25730, 29880, 30876, 33480, 38595, 44820, 46314, 51460, 61752, 69471, 77190, 89640, 92628, 102920, 115785, 138942, 154380, 185256, 231570, 277884, 308760, 347355, 463140, 555768, 694710, 926280, 1389420, 2778840]

約数ペア:

[(1, 2778840), (2, 1389420), (3, 926280), (4, 694710), (5, 555768), (6, 463140), (8, 347355), (9, 308760), (10, 277884), (12, 231570), (15, 185256), (18, 154380), (20, 138942), (24, 115785), (27, 102920), (30, 92628), (31, 89640), (36, 77190), (40, 69471), (45, 61752), (54, 51460), (60, 46314), (62, 44820), (72, 38595), (83, 33480), (90, 30876), (93, 29880), (108, 25730), (120, 23157), (124, 22410), (135, 20584), (155, 17928), (166, 16740), (180, 15438), (186, 14940), (216, 12865), (248, 11205), (249, 11160), (270, 10292), (279, 9960), (310, 8964), (332, 8370), (360, 7719), (372, 7470), (415, 6696), (465, 5976), (498, 5580), (540, 5146), (558, 4980), (620, 4482), (664, 4185), (744, 3735), (747, 3720), (830, 3348), (837, 3320), (930, 2988), (996, 2790), (1080, 2573), (1116, 2490), (1240, 2241), (1245, 2232), (1395, 1992), (1494, 1860), (1660, 1674)]