81335540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28439}}^1$

素因数の和:28472

約数の個数: 48

約数和(自身を含む): 200672640

約数和(自身を除く): 119337100

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 28439, 56878, 113756, 142195, 284390, 312829, 369707, 568780, 625658, 739414, 1251316, 1478828, 1564145, 1848535, 3128290, 3697070, 4066777, 6256580, 7394140, 8133554, 16267108, 20333885, 40667770, 81335540]

約数ペア:

[(1, 81335540), (2, 40667770), (4, 20333885), (5, 16267108), (10, 8133554), (11, 7394140), (13, 6256580), (20, 4066777), (22, 3697070), (26, 3128290), (44, 1848535), (52, 1564145), (55, 1478828), (65, 1251316), (110, 739414), (130, 625658), (143, 568780), (220, 369707), (260, 312829), (286, 284390), (572, 142195), (715, 113756), (1430, 56878), (2860, 28439)]