18727420

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 40578048

約数和(自身を除く): 21850628

約数列:

[1, 2, 4, 5, 10, 20, 73, 101, 127, 146, 202, 254, 292, 365, 404, 505, 508, 635, 730, 1010, 1270, 1460, 2020, 2540, 7373, 9271, 12827, 14746, 18542, 25654, 29492, 36865, 37084, 46355, 51308, 64135, 73730, 92710, 128270, 147460, 185420, 256540, 936371, 1872742, 3745484, 4681855, 9363710, 18727420]

約数ペア:

[(1, 18727420), (2, 9363710), (4, 4681855), (5, 3745484), (10, 1872742), (20, 936371), (73, 256540), (101, 185420), (127, 147460), (146, 128270), (202, 92710), (254, 73730), (292, 64135), (365, 51308), (404, 46355), (505, 37084), (508, 36865), (635, 29492), (730, 25654), (1010, 18542), (1270, 14746), (1460, 12827), (2020, 9271), (2540, 7373)]