19722703

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:128

約数の個数: 64

約数和(自身を含む): 29998080

約数和(自身を除く): 10275377

約数列:

[1, 7, 11, 13, 17, 19, 61, 77, 91, 119, 133, 143, 187, 209, 221, 247, 323, 427, 671, 793, 1001, 1037, 1159, 1309, 1463, 1547, 1729, 2261, 2431, 2717, 3553, 4199, 4697, 5551, 7259, 8113, 8723, 11407, 12749, 13481, 15067, 17017, 19019, 19703, 24871, 29393, 46189, 61061, 79849, 89243, 94367, 105469, 137921, 148291, 165737, 216733, 256139, 323323, 1038037, 1160159, 1517131, 1792973, 2817529, 19722703]

約数ペア:

[(1, 19722703), (7, 2817529), (11, 1792973), (13, 1517131), (17, 1160159), (19, 1038037), (61, 323323), (77, 256139), (91, 216733), (119, 165737), (133, 148291), (143, 137921), (187, 105469), (209, 94367), (221, 89243), (247, 79849), (323, 61061), (427, 46189), (671, 29393), (793, 24871), (1001, 19703), (1037, 19019), (1159, 17017), (1309, 15067), (1463, 13481), (1547, 12749), (1729, 11407), (2261, 8723), (2431, 8113), (2717, 7259), (3553, 5551), (4199, 4697)]