19947690

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{31663}}^1$

素因数の和:31683

約数の個数: 48

約数和(自身を含む): 59275008

約数和(自身を除く): 39327318

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 31663, 63326, 94989, 158315, 189978, 221641, 284967, 316630, 443282, 474945, 569934, 664923, 949890, 1108205, 1329846, 1424835, 1994769, 2216410, 2849670, 3324615, 3989538, 6649230, 9973845, 19947690]

約数ペア:

[(1, 19947690), (2, 9973845), (3, 6649230), (5, 3989538), (6, 3324615), (7, 2849670), (9, 2216410), (10, 1994769), (14, 1424835), (15, 1329846), (18, 1108205), (21, 949890), (30, 664923), (35, 569934), (42, 474945), (45, 443282), (63, 316630), (70, 284967), (90, 221641), (105, 189978), (126, 158315), (210, 94989), (315, 63326), (630, 31663)]