820200918280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1\times {\mathrm{28711}}^1$

素因数の和:29759

約数の個数: 128

約数和(自身を含む): 2001566350080

約数和(自身を除く): 1181365431800

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 68, 85, 86, 136, 170, 172, 215, 340, 344, 430, 680, 731, 860, 977, 1462, 1720, 1954, 2924, 3655, 3908, 4885, 5848, 7310, 7816, 9770, 14620, 16609, 19540, 28711, 29240, 33218, 39080, 42011, 57422, 66436, 83045, 84022, 114844, 132872, 143555, 166090, 168044, 210055, 229688, 287110, 332180, 336088, 420110, 488087, 574220, 664360, 714187, 840220, 976174, 1148440, 1234573, 1428374, 1680440, 1952348, 2440435, 2469146, 2856748, 3570935, 3904696, 4880870, 4938292, 5713496, 6172865, 7141870, 9761740, 9876584, 12345730, 14283740, 19523480, 20987741, 24691460, 28050647, 28567480, 41975482, 49382920, 56101294, 83950964, 104938705, 112202588, 140253235, 167901928, 209877410, 224405176, 280506470, 419754820, 476860999, 561012940, 839509640, 953721998, 1122025880, 1206177821, 1907443996, 2384304995, 2412355642, 3814887992, 4768609990, 4824711284, 6030889105, 9537219980, 9649422568, 12061778210, 19074439960, 20505022957, 24123556420, 41010045914, 48247112840, 82020091828, 102525114785, 164040183656, 205050229570, 410100459140, 820200918280]

約数ペア:

[(1, 820200918280), (2, 410100459140), (4, 205050229570), (5, 164040183656), (8, 102525114785), (10, 82020091828), (17, 48247112840), (20, 41010045914), (34, 24123556420), (40, 20505022957), (43, 19074439960), (68, 12061778210), (85, 9649422568), (86, 9537219980), (136, 6030889105), (170, 4824711284), (172, 4768609990), (215, 3814887992), (340, 2412355642), (344, 2384304995), (430, 1907443996), (680, 1206177821), (731, 1122025880), (860, 953721998), (977, 839509640), (1462, 561012940), (1720, 476860999), (1954, 419754820), (2924, 280506470), (3655, 224405176), (3908, 209877410), (4885, 167901928), (5848, 140253235), (7310, 112202588), (7816, 104938705), (9770, 83950964), (14620, 56101294), (16609, 49382920), (19540, 41975482), (28711, 28567480), (29240, 28050647), (33218, 24691460), (39080, 20987741), (42011, 19523480), (57422, 14283740), (66436, 12345730), (83045, 9876584), (84022, 9761740), (114844, 7141870), (132872, 6172865), (143555, 5713496), (166090, 4938292), (168044, 4880870), (210055, 3904696), (229688, 3570935), (287110, 2856748), (332180, 2469146), (336088, 2440435), (420110, 1952348), (488087, 1680440), (574220, 1428374), (664360, 1234573), (714187, 1148440), (840220, 976174)]