20654478

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1447}}^1$

素因数の和:1529

約数の個数: 48

約数和(自身を含む): 49017696

約数和(自身を除く): 28363218

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 61, 78, 117, 122, 183, 234, 366, 549, 793, 1098, 1447, 1586, 2379, 2894, 4341, 4758, 7137, 8682, 13023, 14274, 18811, 26046, 37622, 56433, 88267, 112866, 169299, 176534, 264801, 338598, 529602, 794403, 1147471, 1588806, 2294942, 3442413, 6884826, 10327239, 20654478]

約数ペア:

[(1, 20654478), (2, 10327239), (3, 6884826), (6, 3442413), (9, 2294942), (13, 1588806), (18, 1147471), (26, 794403), (39, 529602), (61, 338598), (78, 264801), (117, 176534), (122, 169299), (183, 112866), (234, 88267), (366, 56433), (549, 37622), (793, 26046), (1098, 18811), (1447, 14274), (1586, 13023), (2379, 8682), (2894, 7137), (4341, 4758)]