398747280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{1661447}}^1$

素因数の和:1661463

約数の個数: 40

約数和(自身を含む): 1236117312

約数和(自身を除く): 837370032

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 1661447, 3322894, 4984341, 6645788, 8307235, 9968682, 13291576, 16614470, 19937364, 24921705, 26583152, 33228940, 39874728, 49843410, 66457880, 79749456, 99686820, 132915760, 199373640, 398747280]

約数ペア:

[(1, 398747280), (2, 199373640), (3, 132915760), (4, 99686820), (5, 79749456), (6, 66457880), (8, 49843410), (10, 39874728), (12, 33228940), (15, 26583152), (16, 24921705), (20, 19937364), (24, 16614470), (30, 13291576), (40, 9968682), (48, 8307235), (60, 6645788), (80, 4984341), (120, 3322894), (240, 1661447)]