20278648

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 42097320

約数和(自身を除く): 21818672

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 169, 212, 283, 338, 424, 566, 676, 689, 1132, 1352, 1378, 2264, 2756, 3679, 5512, 7358, 8957, 14716, 14999, 17914, 29432, 29998, 35828, 47827, 59996, 71656, 95654, 119992, 191308, 194987, 382616, 389974, 779948, 1559896, 2534831, 5069662, 10139324, 20278648]

約数ペア:

[(1, 20278648), (2, 10139324), (4, 5069662), (8, 2534831), (13, 1559896), (26, 779948), (52, 389974), (53, 382616), (104, 194987), (106, 191308), (169, 119992), (212, 95654), (283, 71656), (338, 59996), (424, 47827), (566, 35828), (676, 29998), (689, 29432), (1132, 17914), (1352, 14999), (1378, 14716), (2264, 8957), (2756, 7358), (3679, 5512)]