21215671280656

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2707}}^1\times {\mathrm{183527}}^1$

素因数の和:186416

約数の個数: 80

約数和(自身を含む): 43816963499136

約数和(自身を除く): 22601292218480

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 157, 272, 314, 628, 1256, 2512, 2669, 2707, 5338, 5414, 10676, 10828, 21352, 21656, 42704, 43312, 46019, 92038, 183527, 184076, 367054, 368152, 424999, 734108, 736304, 849998, 1468216, 1699996, 2936432, 3119959, 3399992, 6239918, 6799984, 7224983, 12479836, 14449966, 24959672, 28813739, 28899932, 49919344, 57627478, 57799864, 115254956, 115599728, 230509912, 461019824, 489833563, 496807589, 979667126, 993615178, 1959334252, 1987230356, 3918668504, 3974460712, 7837337008, 7948921424, 8445729013, 16891458026, 33782916052, 67565832104, 77998791473, 135131664208, 155997582946, 311995165892, 623990331784, 1247980663568, 1325979455041, 2651958910082, 5303917820164, 10607835640328, 21215671280656]

約数ペア:

[(1, 21215671280656), (2, 10607835640328), (4, 5303917820164), (8, 2651958910082), (16, 1325979455041), (17, 1247980663568), (34, 623990331784), (68, 311995165892), (136, 155997582946), (157, 135131664208), (272, 77998791473), (314, 67565832104), (628, 33782916052), (1256, 16891458026), (2512, 8445729013), (2669, 7948921424), (2707, 7837337008), (5338, 3974460712), (5414, 3918668504), (10676, 1987230356), (10828, 1959334252), (21352, 993615178), (21656, 979667126), (42704, 496807589), (43312, 489833563), (46019, 461019824), (92038, 230509912), (183527, 115599728), (184076, 115254956), (367054, 57799864), (368152, 57627478), (424999, 49919344), (734108, 28899932), (736304, 28813739), (849998, 24959672), (1468216, 14449966), (1699996, 12479836), (2936432, 7224983), (3119959, 6799984), (3399992, 6239918)]