19532810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 40497408

約数和(自身を除く): 20964598

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 61, 71, 82, 110, 122, 142, 205, 305, 355, 410, 451, 610, 671, 710, 781, 902, 1342, 1562, 2255, 2501, 2911, 3355, 3905, 4331, 4510, 5002, 5822, 6710, 7810, 8662, 12505, 14555, 21655, 25010, 27511, 29110, 32021, 43310, 47641, 55022, 64042, 95282, 137555, 160105, 177571, 238205, 275110, 320210, 355142, 476410, 887855, 1775710, 1953281, 3906562, 9766405, 19532810]

約数ペア:

[(1, 19532810), (2, 9766405), (5, 3906562), (10, 1953281), (11, 1775710), (22, 887855), (41, 476410), (55, 355142), (61, 320210), (71, 275110), (82, 238205), (110, 177571), (122, 160105), (142, 137555), (205, 95282), (305, 64042), (355, 55022), (410, 47641), (451, 43310), (610, 32021), (671, 29110), (710, 27511), (781, 25010), (902, 21655), (1342, 14555), (1562, 12505), (2255, 8662), (2501, 7810), (2911, 6710), (3355, 5822), (3905, 5002), (4331, 4510)]