19943703

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 33860736

約数和(自身を除く): 13917033

約数列:

[1, 3, 9, 13, 17, 37, 39, 51, 111, 117, 153, 221, 271, 333, 481, 629, 663, 813, 1443, 1887, 1989, 2439, 3523, 4329, 4607, 5661, 8177, 10027, 10569, 13821, 24531, 30081, 31707, 41463, 59891, 73593, 90243, 130351, 170459, 179673, 391053, 511377, 539019, 1173159, 1534131, 2215967, 6647901, 19943703]

約数ペア:

[(1, 19943703), (3, 6647901), (9, 2215967), (13, 1534131), (17, 1173159), (37, 539019), (39, 511377), (51, 391053), (111, 179673), (117, 170459), (153, 130351), (221, 90243), (271, 73593), (333, 59891), (481, 41463), (629, 31707), (663, 30081), (813, 24531), (1443, 13821), (1887, 10569), (1989, 10027), (2439, 8177), (3523, 5661), (4329, 4607)]