17201720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 40439520

約数和(自身を除く): 23237800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 86, 137, 146, 172, 215, 274, 292, 344, 365, 430, 548, 584, 685, 730, 860, 1096, 1370, 1460, 1720, 2740, 2920, 3139, 5480, 5891, 6278, 10001, 11782, 12556, 15695, 20002, 23564, 25112, 29455, 31390, 40004, 47128, 50005, 58910, 62780, 80008, 100010, 117820, 125560, 200020, 235640, 400040, 430043, 860086, 1720172, 2150215, 3440344, 4300430, 8600860, 17201720]

約数ペア:

[(1, 17201720), (2, 8600860), (4, 4300430), (5, 3440344), (8, 2150215), (10, 1720172), (20, 860086), (40, 430043), (43, 400040), (73, 235640), (86, 200020), (137, 125560), (146, 117820), (172, 100010), (215, 80008), (274, 62780), (292, 58910), (344, 50005), (365, 47128), (430, 40004), (548, 31390), (584, 29455), (685, 25112), (730, 23564), (860, 20002), (1096, 15695), (1370, 12556), (1460, 11782), (1720, 10001), (2740, 6278), (2920, 5891), (3139, 5480)]