1651991680

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{401}}^1$

素因数の和:618

約数の個数: 128

約数和(自身を含む): 4081538160

約数和(自身を除く): 2429546480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 157, 160, 164, 205, 314, 320, 328, 401, 410, 628, 640, 656, 785, 802, 820, 1256, 1312, 1570, 1604, 1640, 2005, 2512, 2624, 3140, 3208, 3280, 4010, 5024, 5248, 6280, 6416, 6437, 6560, 8020, 10048, 12560, 12832, 12874, 13120, 16040, 16441, 20096, 25120, 25664, 25748, 26240, 32080, 32185, 32882, 50240, 51328, 51496, 62957, 64160, 64370, 65764, 82205, 100480, 102992, 125914, 128320, 128740, 131528, 164410, 205984, 251828, 256640, 257480, 263056, 314785, 328820, 411968, 503656, 514960, 526112, 629570, 657640, 823936, 1007312, 1029920, 1052224, 1259140, 1315280, 2014624, 2059840, 2104448, 2518280, 2581237, 2630560, 4029248, 4119680, 5036560, 5162474, 5261120, 8058496, 10073120, 10324948, 10522240, 12906185, 20146240, 20649896, 25812370, 40292480, 41299792, 51624740, 82599584, 103249480, 165199168, 206498960, 330398336, 412997920, 825995840, 1651991680]

約数ペア:

[(1, 1651991680), (2, 825995840), (4, 412997920), (5, 330398336), (8, 206498960), (10, 165199168), (16, 103249480), (20, 82599584), (32, 51624740), (40, 41299792), (41, 40292480), (64, 25812370), (80, 20649896), (82, 20146240), (128, 12906185), (157, 10522240), (160, 10324948), (164, 10073120), (205, 8058496), (314, 5261120), (320, 5162474), (328, 5036560), (401, 4119680), (410, 4029248), (628, 2630560), (640, 2581237), (656, 2518280), (785, 2104448), (802, 2059840), (820, 2014624), (1256, 1315280), (1312, 1259140), (1570, 1052224), (1604, 1029920), (1640, 1007312), (2005, 823936), (2512, 657640), (2624, 629570), (3140, 526112), (3208, 514960), (3280, 503656), (4010, 411968), (5024, 328820), (5248, 314785), (6280, 263056), (6416, 257480), (6437, 256640), (6560, 251828), (8020, 205984), (10048, 164410), (12560, 131528), (12832, 128740), (12874, 128320), (13120, 125914), (16040, 102992), (16441, 100480), (20096, 82205), (25120, 65764), (25664, 64370), (25748, 64160), (26240, 62957), (32080, 51496), (32185, 51328), (32882, 50240)]