20400604

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1237}}^1$

素因数の和:1298

約数の個数: 48

約数和(自身を含む): 44369920

約数和(自身を除く): 23969316

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 62, 76, 124, 133, 217, 266, 434, 532, 589, 868, 1178, 1237, 2356, 2474, 4123, 4948, 8246, 8659, 16492, 17318, 23503, 34636, 38347, 47006, 76694, 94012, 153388, 164521, 268429, 329042, 536858, 658084, 728593, 1073716, 1457186, 2914372, 5100151, 10200302, 20400604]

約数ペア:

[(1, 20400604), (2, 10200302), (4, 5100151), (7, 2914372), (14, 1457186), (19, 1073716), (28, 728593), (31, 658084), (38, 536858), (62, 329042), (76, 268429), (124, 164521), (133, 153388), (217, 94012), (266, 76694), (434, 47006), (532, 38347), (589, 34636), (868, 23503), (1178, 17318), (1237, 16492), (2356, 8659), (2474, 8246), (4123, 4948)]