21821618

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{401}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 42374016

約数和(自身を除く): 20552398

約数列:

[1, 2, 7, 13, 14, 23, 26, 46, 91, 161, 169, 182, 299, 322, 338, 401, 598, 802, 1183, 2093, 2366, 2807, 3887, 4186, 5213, 5614, 7774, 9223, 10426, 18446, 27209, 36491, 54418, 64561, 67769, 72982, 119899, 129122, 135538, 239798, 474383, 839293, 948766, 1558687, 1678586, 3117374, 10910809, 21821618]

約数ペア:

[(1, 21821618), (2, 10910809), (7, 3117374), (13, 1678586), (14, 1558687), (23, 948766), (26, 839293), (46, 474383), (91, 239798), (161, 135538), (169, 129122), (182, 119899), (299, 72982), (322, 67769), (338, 64561), (401, 54418), (598, 36491), (802, 27209), (1183, 18446), (2093, 10426), (2366, 9223), (2807, 7774), (3887, 5614), (4186, 5213)]