19876766

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:337

約数の個数: 48

約数和(自身を含む): 38227968

約数和(自身を除く): 18351202

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 169, 182, 217, 271, 338, 403, 434, 542, 806, 1183, 1897, 2366, 2821, 3523, 3794, 5239, 5642, 7046, 8401, 10478, 16802, 24661, 36673, 45799, 49322, 58807, 73346, 91598, 109213, 117614, 218426, 320593, 641186, 764491, 1419769, 1528982, 2839538, 9938383, 19876766]

約数ペア:

[(1, 19876766), (2, 9938383), (7, 2839538), (13, 1528982), (14, 1419769), (26, 764491), (31, 641186), (62, 320593), (91, 218426), (169, 117614), (182, 109213), (217, 91598), (271, 73346), (338, 58807), (403, 49322), (434, 45799), (542, 36673), (806, 24661), (1183, 16802), (1897, 10478), (2366, 8401), (2821, 7046), (3523, 5642), (3794, 5239)]