20405826

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2281}}^1$

素因数の和:2367

約数の個数: 48

約数和(自身を含む): 51262848

約数和(自身を除く): 30857022

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 71, 126, 142, 213, 426, 497, 639, 994, 1278, 1491, 2281, 2982, 4473, 4562, 6843, 8946, 13686, 15967, 20529, 31934, 41058, 47901, 95802, 143703, 161951, 287406, 323902, 485853, 971706, 1133657, 1457559, 2267314, 2915118, 3400971, 6801942, 10202913, 20405826]

約数ペア:

[(1, 20405826), (2, 10202913), (3, 6801942), (6, 3400971), (7, 2915118), (9, 2267314), (14, 1457559), (18, 1133657), (21, 971706), (42, 485853), (63, 323902), (71, 287406), (126, 161951), (142, 143703), (213, 95802), (426, 47901), (497, 41058), (639, 31934), (994, 20529), (1278, 15967), (1491, 13686), (2281, 8946), (2982, 6843), (4473, 4562)]