217420040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6653}}^1$

素因数の和:6726

約数の個数: 64

約数和(自身を含む): 526996800

約数和(自身を除く): 309576760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 3268, 4085, 6536, 6653, 8170, 13306, 16340, 26612, 32680, 33265, 53224, 66530, 126407, 133060, 252814, 266120, 286079, 505628, 572158, 632035, 1011256, 1144316, 1264070, 1430395, 2288632, 2528140, 2860790, 5056280, 5435501, 5721580, 10871002, 11443160, 21742004, 27177505, 43484008, 54355010, 108710020, 217420040]

約数ペア:

[(1, 217420040), (2, 108710020), (4, 54355010), (5, 43484008), (8, 27177505), (10, 21742004), (19, 11443160), (20, 10871002), (38, 5721580), (40, 5435501), (43, 5056280), (76, 2860790), (86, 2528140), (95, 2288632), (152, 1430395), (172, 1264070), (190, 1144316), (215, 1011256), (344, 632035), (380, 572158), (430, 505628), (760, 286079), (817, 266120), (860, 252814), (1634, 133060), (1720, 126407), (3268, 66530), (4085, 53224), (6536, 33265), (6653, 32680), (8170, 26612), (13306, 16340)]