21398835

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2707}}^1$

素因数の和:2763

約数の個数: 32

約数和(自身を含む): 37435392

約数和(自身を除く): 16036557

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 2707, 7905, 8121, 13535, 40605, 46019, 83917, 138057, 230095, 251751, 419585, 690285, 1258755, 1426589, 4279767, 7132945, 21398835]

約数ペア:

[(1, 21398835), (3, 7132945), (5, 4279767), (15, 1426589), (17, 1258755), (31, 690285), (51, 419585), (85, 251751), (93, 230095), (155, 138057), (255, 83917), (465, 46019), (527, 40605), (1581, 13535), (2635, 8121), (2707, 7905)]