18957290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 20855830

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 59, 110, 115, 118, 127, 230, 253, 254, 295, 506, 590, 635, 649, 1265, 1270, 1298, 1357, 1397, 2530, 2714, 2794, 2921, 3245, 5842, 6490, 6785, 6985, 7493, 13570, 13970, 14605, 14927, 14986, 29210, 29854, 32131, 37465, 64262, 74635, 74930, 82423, 149270, 160655, 164846, 172339, 321310, 344678, 412115, 824230, 861695, 1723390, 1895729, 3791458, 9478645, 18957290]

約数ペア:

[(1, 18957290), (2, 9478645), (5, 3791458), (10, 1895729), (11, 1723390), (22, 861695), (23, 824230), (46, 412115), (55, 344678), (59, 321310), (110, 172339), (115, 164846), (118, 160655), (127, 149270), (230, 82423), (253, 74930), (254, 74635), (295, 64262), (506, 37465), (590, 32131), (635, 29854), (649, 29210), (1265, 14986), (1270, 14927), (1298, 14605), (1357, 13970), (1397, 13570), (2530, 7493), (2714, 6985), (2794, 6785), (2921, 6490), (3245, 5842)]