28991527880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{17923}}^1$

素因数の和:18103

約数の個数: 128

約数和(自身を含む): 76657363200

約数和(自身を除く): 47665835320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 109, 140, 212, 218, 265, 280, 371, 424, 436, 530, 545, 742, 763, 872, 1060, 1090, 1484, 1526, 1855, 2120, 2180, 2968, 3052, 3710, 3815, 4360, 5777, 6104, 7420, 7630, 11554, 14840, 15260, 17923, 23108, 28885, 30520, 35846, 40439, 46216, 57770, 71692, 80878, 89615, 115540, 125461, 143384, 161756, 179230, 202195, 231080, 250922, 323512, 358460, 404390, 501844, 627305, 716920, 808780, 949919, 1003688, 1254610, 1617560, 1899838, 1953607, 2509220, 3799676, 3907214, 4749595, 5018440, 6649433, 7599352, 7814428, 9499190, 9768035, 13298866, 13675249, 15628856, 18998380, 19536070, 26597732, 27350498, 33247165, 37996760, 39072140, 53195464, 54700996, 66494330, 68376245, 78144280, 103541171, 109401992, 132988660, 136752490, 207082342, 265977320, 273504980, 414164684, 517705855, 547009960, 724788197, 828329368, 1035411710, 1449576394, 2070823420, 2899152788, 3623940985, 4141646840, 5798305576, 7247881970, 14495763940, 28991527880]

約数ペア:

[(1, 28991527880), (2, 14495763940), (4, 7247881970), (5, 5798305576), (7, 4141646840), (8, 3623940985), (10, 2899152788), (14, 2070823420), (20, 1449576394), (28, 1035411710), (35, 828329368), (40, 724788197), (53, 547009960), (56, 517705855), (70, 414164684), (106, 273504980), (109, 265977320), (140, 207082342), (212, 136752490), (218, 132988660), (265, 109401992), (280, 103541171), (371, 78144280), (424, 68376245), (436, 66494330), (530, 54700996), (545, 53195464), (742, 39072140), (763, 37996760), (872, 33247165), (1060, 27350498), (1090, 26597732), (1484, 19536070), (1526, 18998380), (1855, 15628856), (2120, 13675249), (2180, 13298866), (2968, 9768035), (3052, 9499190), (3710, 7814428), (3815, 7599352), (4360, 6649433), (5777, 5018440), (6104, 4749595), (7420, 3907214), (7630, 3799676), (11554, 2509220), (14840, 1953607), (15260, 1899838), (17923, 1617560), (23108, 1254610), (28885, 1003688), (30520, 949919), (35846, 808780), (40439, 716920), (46216, 627305), (57770, 501844), (71692, 404390), (80878, 358460), (89615, 323512), (115540, 250922), (125461, 231080), (143384, 202195), (161756, 179230)]