81711540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12269}}^1$

素因数の和:12321

約数の個数: 72

約数和(自身を含む): 254577960

約数和(自身を除く): 172866420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3330, 6660, 12269, 24538, 36807, 49076, 61345, 73614, 110421, 122690, 147228, 184035, 220842, 245380, 368070, 441684, 453953, 552105, 736140, 907906, 1104210, 1361859, 1815812, 2208420, 2269765, 2723718, 4085577, 4539530, 5447436, 6809295, 8171154, 9079060, 13618590, 16342308, 20427885, 27237180, 40855770, 81711540]

約数ペア:

[(1, 81711540), (2, 40855770), (3, 27237180), (4, 20427885), (5, 16342308), (6, 13618590), (9, 9079060), (10, 8171154), (12, 6809295), (15, 5447436), (18, 4539530), (20, 4085577), (30, 2723718), (36, 2269765), (37, 2208420), (45, 1815812), (60, 1361859), (74, 1104210), (90, 907906), (111, 736140), (148, 552105), (180, 453953), (185, 441684), (222, 368070), (333, 245380), (370, 220842), (444, 184035), (555, 147228), (666, 122690), (740, 110421), (1110, 73614), (1332, 61345), (1665, 49076), (2220, 36807), (3330, 24538), (6660, 12269)]