19964308

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4219}}^1$

素因数の和:4256

約数の個数: 36

約数和(自身を含む): 43246560

約数和(自身を除く): 23282252

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4219, 4732, 8438, 16876, 29533, 54847, 59066, 109694, 118132, 219388, 383929, 713011, 767858, 1426022, 1535716, 2852044, 4991077, 9982154, 19964308]

約数ペア:

[(1, 19964308), (2, 9982154), (4, 4991077), (7, 2852044), (13, 1535716), (14, 1426022), (26, 767858), (28, 713011), (52, 383929), (91, 219388), (169, 118132), (182, 109694), (338, 59066), (364, 54847), (676, 29533), (1183, 16876), (2366, 8438), (4219, 4732)]