81810160

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 80

約数和(自身を含む): 198871200

約数和(自身を除く): 117061040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 179, 197, 232, 290, 358, 394, 464, 580, 716, 788, 895, 985, 1160, 1432, 1576, 1790, 1970, 2320, 2864, 3152, 3580, 3940, 5191, 5713, 7160, 7880, 10382, 11426, 14320, 15760, 20764, 22852, 25955, 28565, 35263, 41528, 45704, 51910, 57130, 70526, 83056, 91408, 103820, 114260, 141052, 176315, 207640, 228520, 282104, 352630, 415280, 457040, 564208, 705260, 1022627, 1410520, 2045254, 2821040, 4090508, 5113135, 8181016, 10226270, 16362032, 20452540, 40905080, 81810160]

約数ペア:

[(1, 81810160), (2, 40905080), (4, 20452540), (5, 16362032), (8, 10226270), (10, 8181016), (16, 5113135), (20, 4090508), (29, 2821040), (40, 2045254), (58, 1410520), (80, 1022627), (116, 705260), (145, 564208), (179, 457040), (197, 415280), (232, 352630), (290, 282104), (358, 228520), (394, 207640), (464, 176315), (580, 141052), (716, 114260), (788, 103820), (895, 91408), (985, 83056), (1160, 70526), (1432, 57130), (1576, 51910), (1790, 45704), (1970, 41528), (2320, 35263), (2864, 28565), (3152, 25955), (3580, 22852), (3940, 20764), (5191, 15760), (5713, 14320), (7160, 11426), (7880, 10382)]