20697878

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13516522

約数列:

[1, 2, 19, 38, 43, 53, 86, 106, 239, 478, 817, 1007, 1634, 2014, 2279, 4541, 4558, 9082, 10277, 12667, 20554, 25334, 43301, 86602, 195263, 240673, 390526, 481346, 544681, 1089362, 10348939, 20697878]

約数ペア:

[(1, 20697878), (2, 10348939), (19, 1089362), (38, 544681), (43, 481346), (53, 390526), (86, 240673), (106, 195263), (239, 86602), (478, 43301), (817, 25334), (1007, 20554), (1634, 12667), (2014, 10277), (2279, 9082), (4541, 4558)]