17991960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{21419}}^1$

素因数の和:21440

約数の個数: 64

約数和(自身を含む): 61689600

約数和(自身を除く): 43697640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 21419, 42838, 64257, 85676, 107095, 128514, 149933, 171352, 214190, 257028, 299866, 321285, 428380, 449799, 514056, 599732, 642570, 749665, 856760, 899598, 1199464, 1285140, 1499330, 1799196, 2248995, 2570280, 2998660, 3598392, 4497990, 5997320, 8995980, 17991960]

約数ペア:

[(1, 17991960), (2, 8995980), (3, 5997320), (4, 4497990), (5, 3598392), (6, 2998660), (7, 2570280), (8, 2248995), (10, 1799196), (12, 1499330), (14, 1285140), (15, 1199464), (20, 899598), (21, 856760), (24, 749665), (28, 642570), (30, 599732), (35, 514056), (40, 449799), (42, 428380), (56, 321285), (60, 299866), (70, 257028), (84, 214190), (105, 171352), (120, 149933), (140, 128514), (168, 107095), (210, 85676), (280, 64257), (420, 42838), (840, 21419)]