19486775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 30855168

約数和(自身を除く): 11368393

約数列:

[1, 5, 7, 11, 25, 35, 53, 55, 77, 175, 191, 265, 275, 371, 385, 583, 955, 1325, 1337, 1855, 1925, 2101, 2915, 4081, 4775, 6685, 9275, 10123, 10505, 14575, 14707, 20405, 33425, 50615, 52525, 70861, 73535, 102025, 111353, 253075, 354305, 367675, 556765, 779471, 1771525, 2783825, 3897355, 19486775]

約数ペア:

[(1, 19486775), (5, 3897355), (7, 2783825), (11, 1771525), (25, 779471), (35, 556765), (53, 367675), (55, 354305), (77, 253075), (175, 111353), (191, 102025), (265, 73535), (275, 70861), (371, 52525), (385, 50615), (583, 33425), (955, 20405), (1325, 14707), (1337, 14575), (1855, 10505), (1925, 10123), (2101, 9275), (2915, 6685), (4081, 4775)]