208080400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:198

約数の個数: 180

約数和(自身を含む): 579967344

約数和(自身を除く): 371886944

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 25, 38, 40, 44, 50, 55, 76, 80, 88, 95, 100, 110, 131, 152, 176, 190, 200, 209, 220, 262, 275, 304, 361, 380, 400, 418, 440, 475, 524, 550, 655, 722, 760, 836, 880, 950, 1045, 1048, 1100, 1310, 1441, 1444, 1520, 1672, 1805, 1900, 2090, 2096, 2200, 2489, 2620, 2882, 2888, 3275, 3344, 3610, 3800, 3971, 4180, 4400, 4978, 5225, 5240, 5764, 5776, 6550, 7205, 7220, 7600, 7942, 8360, 9025, 9956, 10450, 10480, 11528, 12445, 13100, 14410, 14440, 15884, 16720, 18050, 19855, 19912, 20900, 23056, 24890, 26200, 27379, 28820, 28880, 31768, 36025, 36100, 39710, 39824, 41800, 47291, 49780, 52400, 54758, 57640, 62225, 63536, 72050, 72200, 79420, 83600, 94582, 99275, 99560, 109516, 115280, 124450, 136895, 144100, 144400, 158840, 189164, 198550, 199120, 219032, 236455, 248900, 273790, 288200, 317680, 378328, 397100, 438064, 472910, 497800, 520201, 547580, 576400, 684475, 756656, 794200, 945820, 995600, 1040402, 1095160, 1182275, 1368950, 1588400, 1891640, 2080804, 2190320, 2364550, 2601005, 2737900, 3783280, 4161608, 4729100, 5202010, 5475800, 8323216, 9458200, 10404020, 10951600, 13005025, 18916400, 20808040, 26010050, 41616080, 52020100, 104040200, 208080400]

約数ペア:

[(1, 208080400), (2, 104040200), (4, 52020100), (5, 41616080), (8, 26010050), (10, 20808040), (11, 18916400), (16, 13005025), (19, 10951600), (20, 10404020), (22, 9458200), (25, 8323216), (38, 5475800), (40, 5202010), (44, 4729100), (50, 4161608), (55, 3783280), (76, 2737900), (80, 2601005), (88, 2364550), (95, 2190320), (100, 2080804), (110, 1891640), (131, 1588400), (152, 1368950), (176, 1182275), (190, 1095160), (200, 1040402), (209, 995600), (220, 945820), (262, 794200), (275, 756656), (304, 684475), (361, 576400), (380, 547580), (400, 520201), (418, 497800), (440, 472910), (475, 438064), (524, 397100), (550, 378328), (655, 317680), (722, 288200), (760, 273790), (836, 248900), (880, 236455), (950, 219032), (1045, 199120), (1048, 198550), (1100, 189164), (1310, 158840), (1441, 144400), (1444, 144100), (1520, 136895), (1672, 124450), (1805, 115280), (1900, 109516), (2090, 99560), (2096, 99275), (2200, 94582), (2489, 83600), (2620, 79420), (2882, 72200), (2888, 72050), (3275, 63536), (3344, 62225), (3610, 57640), (3800, 54758), (3971, 52400), (4180, 49780), (4400, 47291), (4978, 41800), (5225, 39824), (5240, 39710), (5764, 36100), (5776, 36025), (6550, 31768), (7205, 28880), (7220, 28820), (7600, 27379), (7942, 26200), (8360, 24890), (9025, 23056), (9956, 20900), (10450, 19912), (10480, 19855), (11528, 18050), (12445, 16720), (13100, 15884), (14410, 14440)]