161221214

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{1979}}^1$

素因数の和:2045

約数の個数: 48

約数和(自身を含む): 315342720

約数和(自身を除く): 154121506

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 529, 1058, 1771, 1979, 3542, 3703, 3958, 5819, 7406, 11638, 13853, 21769, 27706, 40733, 43538, 45517, 81466, 91034, 152383, 304766, 318619, 500687, 637238, 1001374, 1046891, 2093782, 3504809, 7009618, 7328237, 11515801, 14656474, 23031602, 80610607, 161221214]

約数ペア:

[(1, 161221214), (2, 80610607), (7, 23031602), (11, 14656474), (14, 11515801), (22, 7328237), (23, 7009618), (46, 3504809), (77, 2093782), (154, 1046891), (161, 1001374), (253, 637238), (322, 500687), (506, 318619), (529, 304766), (1058, 152383), (1771, 91034), (1979, 81466), (3542, 45517), (3703, 43538), (3958, 40733), (5819, 27706), (7406, 21769), (11638, 13853)]