1996725680

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^2\times {\mathrm{137}}^1$

素因数の和:351

約数の個数: 120

約数和(自身を含む): 4935032352

約数和(自身を除く): 2938306672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 89, 92, 115, 137, 178, 184, 230, 274, 356, 368, 445, 460, 548, 685, 712, 890, 920, 1096, 1370, 1424, 1780, 1840, 2047, 2192, 2740, 3151, 3560, 4094, 5480, 6302, 7120, 7921, 8188, 10235, 10960, 12193, 12604, 15755, 15842, 16376, 20470, 24386, 25208, 31510, 31684, 32752, 39605, 40940, 48772, 50416, 60965, 63020, 63368, 79210, 81880, 97544, 121930, 126040, 126736, 158420, 163760, 182183, 195088, 243860, 252080, 280439, 316840, 364366, 487720, 560878, 633680, 728732, 910915, 975440, 1085177, 1121756, 1402195, 1457464, 1821830, 2170354, 2243512, 2804390, 2914928, 3643660, 4340708, 4487024, 5425885, 5608780, 7287320, 8681416, 10851770, 11217560, 14574640, 17362832, 21703540, 22435120, 24959071, 43407080, 49918142, 86814160, 99836284, 124795355, 199672568, 249590710, 399345136, 499181420, 998362840, 1996725680]

約数ペア:

[(1, 1996725680), (2, 998362840), (4, 499181420), (5, 399345136), (8, 249590710), (10, 199672568), (16, 124795355), (20, 99836284), (23, 86814160), (40, 49918142), (46, 43407080), (80, 24959071), (89, 22435120), (92, 21703540), (115, 17362832), (137, 14574640), (178, 11217560), (184, 10851770), (230, 8681416), (274, 7287320), (356, 5608780), (368, 5425885), (445, 4487024), (460, 4340708), (548, 3643660), (685, 2914928), (712, 2804390), (890, 2243512), (920, 2170354), (1096, 1821830), (1370, 1457464), (1424, 1402195), (1780, 1121756), (1840, 1085177), (2047, 975440), (2192, 910915), (2740, 728732), (3151, 633680), (3560, 560878), (4094, 487720), (5480, 364366), (6302, 316840), (7120, 280439), (7921, 252080), (8188, 243860), (10235, 195088), (10960, 182183), (12193, 163760), (12604, 158420), (15755, 126736), (15842, 126040), (16376, 121930), (20470, 97544), (24386, 81880), (25208, 79210), (31510, 63368), (31684, 63020), (32752, 60965), (39605, 50416), (40940, 48772)]