19497040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 48568320

約数和(自身を除く): 29071280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 101, 127, 152, 190, 202, 254, 304, 380, 404, 505, 508, 635, 760, 808, 1010, 1016, 1270, 1520, 1616, 1919, 2020, 2032, 2413, 2540, 3838, 4040, 4826, 5080, 7676, 8080, 9595, 9652, 10160, 12065, 12827, 15352, 19190, 19304, 24130, 25654, 30704, 38380, 38608, 48260, 51308, 64135, 76760, 96520, 102616, 128270, 153520, 193040, 205232, 243713, 256540, 487426, 513080, 974852, 1026160, 1218565, 1949704, 2437130, 3899408, 4874260, 9748520, 19497040]

約数ペア:

[(1, 19497040), (2, 9748520), (4, 4874260), (5, 3899408), (8, 2437130), (10, 1949704), (16, 1218565), (19, 1026160), (20, 974852), (38, 513080), (40, 487426), (76, 256540), (80, 243713), (95, 205232), (101, 193040), (127, 153520), (152, 128270), (190, 102616), (202, 96520), (254, 76760), (304, 64135), (380, 51308), (404, 48260), (505, 38608), (508, 38380), (635, 30704), (760, 25654), (808, 24130), (1010, 19304), (1016, 19190), (1270, 15352), (1520, 12827), (1616, 12065), (1919, 10160), (2020, 9652), (2032, 9595), (2413, 8080), (2540, 7676), (3838, 5080), (4040, 4826)]