20296628

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 40279680

約数和(自身を除く): 19983052

約数列:

[1, 2, 4, 11, 22, 44, 71, 73, 89, 142, 146, 178, 284, 292, 356, 781, 803, 979, 1562, 1606, 1958, 3124, 3212, 3916, 5183, 6319, 6497, 10366, 12638, 12994, 20732, 25276, 25988, 57013, 69509, 71467, 114026, 139018, 142934, 228052, 278036, 285868, 461287, 922574, 1845148, 5074157, 10148314, 20296628]

約数ペア:

[(1, 20296628), (2, 10148314), (4, 5074157), (11, 1845148), (22, 922574), (44, 461287), (71, 285868), (73, 278036), (89, 228052), (142, 142934), (146, 139018), (178, 114026), (284, 71467), (292, 69509), (356, 57013), (781, 25988), (803, 25276), (979, 20732), (1562, 12994), (1606, 12638), (1958, 10366), (3124, 6497), (3212, 6319), (3916, 5183)]