20683908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:617

約数の個数: 72

約数和(自身を含む): 60191040

約数和(自身を除く): 39507132

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 211, 252, 389, 422, 633, 778, 844, 1167, 1266, 1477, 1556, 1899, 2334, 2532, 2723, 2954, 3501, 3798, 4431, 4668, 5446, 5908, 7002, 7596, 8169, 8862, 10892, 13293, 14004, 16338, 17724, 24507, 26586, 32676, 49014, 53172, 82079, 98028, 164158, 246237, 328316, 492474, 574553, 738711, 984948, 1149106, 1477422, 1723659, 2298212, 2954844, 3447318, 5170977, 6894636, 10341954, 20683908]

約数ペア:

[(1, 20683908), (2, 10341954), (3, 6894636), (4, 5170977), (6, 3447318), (7, 2954844), (9, 2298212), (12, 1723659), (14, 1477422), (18, 1149106), (21, 984948), (28, 738711), (36, 574553), (42, 492474), (63, 328316), (84, 246237), (126, 164158), (211, 98028), (252, 82079), (389, 53172), (422, 49014), (633, 32676), (778, 26586), (844, 24507), (1167, 17724), (1266, 16338), (1477, 14004), (1556, 13293), (1899, 10892), (2334, 8862), (2532, 8169), (2723, 7596), (2954, 7002), (3501, 5908), (3798, 5446), (4431, 4668)]