81402840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3967}}^1$

素因数の和:4006

約数の個数: 128

約数和(自身を含む): 285696000

約数和(自身を除く): 204293160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 3967, 4104, 5130, 6840, 7934, 10260, 11901, 15868, 19835, 20520, 23802, 31736, 35703, 39670, 47604, 59505, 71406, 75373, 79340, 95208, 107109, 119010, 142812, 150746, 158680, 178515, 214218, 226119, 238020, 285624, 301492, 357030, 376865, 428436, 452238, 476040, 535545, 602984, 678357, 714060, 753730, 856872, 904476, 1071090, 1130595, 1356714, 1428120, 1507460, 1808952, 2035071, 2142180, 2261190, 2713428, 3014920, 3391785, 4070142, 4284360, 4522380, 5426856, 6783570, 8140284, 9044760, 10175355, 13567140, 16280568, 20350710, 27134280, 40701420, 81402840]

約数ペア:

[(1, 81402840), (2, 40701420), (3, 27134280), (4, 20350710), (5, 16280568), (6, 13567140), (8, 10175355), (9, 9044760), (10, 8140284), (12, 6783570), (15, 5426856), (18, 4522380), (19, 4284360), (20, 4070142), (24, 3391785), (27, 3014920), (30, 2713428), (36, 2261190), (38, 2142180), (40, 2035071), (45, 1808952), (54, 1507460), (57, 1428120), (60, 1356714), (72, 1130595), (76, 1071090), (90, 904476), (95, 856872), (108, 753730), (114, 714060), (120, 678357), (135, 602984), (152, 535545), (171, 476040), (180, 452238), (190, 428436), (216, 376865), (228, 357030), (270, 301492), (285, 285624), (342, 238020), (360, 226119), (380, 214218), (456, 178515), (513, 158680), (540, 150746), (570, 142812), (684, 119010), (760, 107109), (855, 95208), (1026, 79340), (1080, 75373), (1140, 71406), (1368, 59505), (1710, 47604), (2052, 39670), (2280, 35703), (2565, 31736), (3420, 23802), (3967, 20520), (4104, 19835), (5130, 15868), (6840, 11901), (7934, 10260)]