168768340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20939}}^1$

素因数の和:20992

約数の個数: 48

約数和(自身を含む): 394007040

約数和(自身を除く): 225238700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 20939, 41878, 83756, 104695, 209390, 272207, 418780, 544414, 649109, 1088828, 1298218, 1361035, 2596436, 2722070, 3245545, 5444140, 6491090, 8438417, 12982180, 16876834, 33753668, 42192085, 84384170, 168768340]

約数ペア:

[(1, 168768340), (2, 84384170), (4, 42192085), (5, 33753668), (10, 16876834), (13, 12982180), (20, 8438417), (26, 6491090), (31, 5444140), (52, 3245545), (62, 2722070), (65, 2596436), (124, 1361035), (130, 1298218), (155, 1088828), (260, 649109), (310, 544414), (403, 418780), (620, 272207), (806, 209390), (1612, 104695), (2015, 83756), (4030, 41878), (8060, 20939)]