20766044

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{139}}^1$

素因数の和:199

約数の個数: 48

約数和(自身を含む): 41983200

約数和(自身を除く): 21217156

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 139, 169, 221, 278, 338, 442, 556, 676, 884, 1807, 2197, 2363, 2873, 3614, 4394, 4726, 5746, 7228, 8788, 9452, 11492, 23491, 30719, 37349, 46982, 61438, 74698, 93964, 122876, 149396, 305383, 399347, 610766, 798694, 1221532, 1597388, 5191511, 10383022, 20766044]

約数ペア:

[(1, 20766044), (2, 10383022), (4, 5191511), (13, 1597388), (17, 1221532), (26, 798694), (34, 610766), (52, 399347), (68, 305383), (139, 149396), (169, 122876), (221, 93964), (278, 74698), (338, 61438), (442, 46982), (556, 37349), (676, 30719), (884, 23491), (1807, 11492), (2197, 9452), (2363, 8788), (2873, 7228), (3614, 5746), (4394, 4726)]