19921545

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7027}}^1$

素因数の和:7051

約数の個数: 40

約数和(自身を含む): 40818624

約数和(自身を除く): 20897079

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7027, 21081, 35135, 49189, 63243, 105405, 147567, 189729, 245945, 316215, 442701, 569187, 737835, 948645, 1328103, 2213505, 2845935, 3984309, 6640515, 19921545]

約数ペア:

[(1, 19921545), (3, 6640515), (5, 3984309), (7, 2845935), (9, 2213505), (15, 1328103), (21, 948645), (27, 737835), (35, 569187), (45, 442701), (63, 316215), (81, 245945), (105, 189729), (135, 147567), (189, 105405), (315, 63243), (405, 49189), (567, 35135), (945, 21081), (2835, 7027)]