18917822

素因数分解:

$2^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 19098178

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 49, 77, 98, 109, 154, 161, 218, 253, 322, 343, 506, 539, 686, 763, 1078, 1127, 1199, 1526, 1771, 2254, 2398, 2507, 3542, 3773, 5014, 5341, 7546, 7889, 8393, 10682, 12397, 15778, 16786, 17549, 24794, 27577, 35098, 37387, 55154, 58751, 74774, 86779, 117502, 122843, 173558, 193039, 245686, 386078, 411257, 822514, 859901, 1351273, 1719802, 2702546, 9458911, 18917822]

約数ペア:

[(1, 18917822), (2, 9458911), (7, 2702546), (11, 1719802), (14, 1351273), (22, 859901), (23, 822514), (46, 411257), (49, 386078), (77, 245686), (98, 193039), (109, 173558), (154, 122843), (161, 117502), (218, 86779), (253, 74774), (322, 58751), (343, 55154), (506, 37387), (539, 35098), (686, 27577), (763, 24794), (1078, 17549), (1127, 16786), (1199, 15778), (1526, 12397), (1771, 10682), (2254, 8393), (2398, 7889), (2507, 7546), (3542, 5341), (3773, 5014)]