20130161420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1\times {\mathrm{25579}}^1$

素因数の和:25735

約数の個数: 72

約数和(自身を含む): 45026427600

約数和(自身を除く): 24896266180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 361, 380, 436, 545, 722, 1090, 1444, 1805, 2071, 2180, 3610, 4142, 7220, 8284, 10355, 20710, 25579, 39349, 41420, 51158, 78698, 102316, 127895, 157396, 196745, 255790, 393490, 486001, 511580, 786980, 972002, 1944004, 2430005, 2788111, 4860010, 5576222, 9234019, 9720020, 11152444, 13940555, 18468038, 27881110, 36936076, 46170095, 52974109, 55762220, 92340190, 105948218, 184680380, 211896436, 264870545, 529741090, 1006508071, 1059482180, 2013016142, 4026032284, 5032540355, 10065080710, 20130161420]

約数ペア:

[(1, 20130161420), (2, 10065080710), (4, 5032540355), (5, 4026032284), (10, 2013016142), (19, 1059482180), (20, 1006508071), (38, 529741090), (76, 264870545), (95, 211896436), (109, 184680380), (190, 105948218), (218, 92340190), (361, 55762220), (380, 52974109), (436, 46170095), (545, 36936076), (722, 27881110), (1090, 18468038), (1444, 13940555), (1805, 11152444), (2071, 9720020), (2180, 9234019), (3610, 5576222), (4142, 4860010), (7220, 2788111), (8284, 2430005), (10355, 1944004), (20710, 972002), (25579, 786980), (39349, 511580), (41420, 486001), (51158, 393490), (78698, 255790), (102316, 196745), (127895, 157396)]