17963719940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^2\times {\mathrm{2027}}^1$

素因数の和:2265

約数の個数: 72

約数和(自身を含む): 38764619712

約数和(自身を除く): 20800899772

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 284, 316, 355, 395, 710, 790, 1420, 1580, 2027, 4054, 5609, 6241, 8108, 10135, 11218, 12482, 20270, 22436, 24964, 28045, 31205, 40540, 56090, 62410, 112180, 124820, 143917, 160133, 287834, 320266, 443111, 575668, 640532, 719585, 800665, 886222, 1439170, 1601330, 1772444, 2215555, 2878340, 3202660, 4431110, 8862220, 11369443, 12650507, 22738886, 25301014, 45477772, 50602028, 56847215, 63252535, 113694430, 126505070, 227388860, 253010140, 898185997, 1796371994, 3592743988, 4490929985, 8981859970, 17963719940]

約数ペア:

[(1, 17963719940), (2, 8981859970), (4, 4490929985), (5, 3592743988), (10, 1796371994), (20, 898185997), (71, 253010140), (79, 227388860), (142, 126505070), (158, 113694430), (284, 63252535), (316, 56847215), (355, 50602028), (395, 45477772), (710, 25301014), (790, 22738886), (1420, 12650507), (1580, 11369443), (2027, 8862220), (4054, 4431110), (5609, 3202660), (6241, 2878340), (8108, 2215555), (10135, 1772444), (11218, 1601330), (12482, 1439170), (20270, 886222), (22436, 800665), (24964, 719585), (28045, 640532), (31205, 575668), (40540, 443111), (56090, 320266), (62410, 287834), (112180, 160133), (124820, 143917)]