18309080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 43092000

約数和(自身を除く): 24782920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 139, 148, 178, 185, 278, 296, 356, 370, 445, 556, 695, 712, 740, 890, 1112, 1390, 1480, 1780, 2780, 3293, 3560, 5143, 5560, 6586, 10286, 12371, 13172, 16465, 20572, 24742, 25715, 26344, 32930, 41144, 49484, 51430, 61855, 65860, 98968, 102860, 123710, 131720, 205720, 247420, 457727, 494840, 915454, 1830908, 2288635, 3661816, 4577270, 9154540, 18309080]

約数ペア:

[(1, 18309080), (2, 9154540), (4, 4577270), (5, 3661816), (8, 2288635), (10, 1830908), (20, 915454), (37, 494840), (40, 457727), (74, 247420), (89, 205720), (139, 131720), (148, 123710), (178, 102860), (185, 98968), (278, 65860), (296, 61855), (356, 51430), (370, 49484), (445, 41144), (556, 32930), (695, 26344), (712, 25715), (740, 24742), (890, 20572), (1112, 16465), (1390, 13172), (1480, 12371), (1780, 10286), (2780, 6586), (3293, 5560), (3560, 5143)]