18257650

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 17365070

約数列:

[1, 2, 5, 10, 25, 37, 50, 71, 74, 139, 142, 185, 278, 355, 370, 695, 710, 925, 1390, 1775, 1850, 2627, 3475, 3550, 5143, 5254, 6950, 9869, 10286, 13135, 19738, 25715, 26270, 49345, 51430, 65675, 98690, 128575, 131350, 246725, 257150, 365153, 493450, 730306, 1825765, 3651530, 9128825, 18257650]

約数ペア:

[(1, 18257650), (2, 9128825), (5, 3651530), (10, 1825765), (25, 730306), (37, 493450), (50, 365153), (71, 257150), (74, 246725), (139, 131350), (142, 128575), (185, 98690), (278, 65675), (355, 51430), (370, 49345), (695, 26270), (710, 25715), (925, 19738), (1390, 13135), (1775, 10286), (1850, 9869), (2627, 6950), (3475, 5254), (3550, 5143)]