81706720

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4021}}^1$

素因数の和:4163

約数の個数: 48

約数和(自身を含む): 194600448

約数和(自身を除く): 112893728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1270, 2032, 2540, 4021, 4064, 5080, 8042, 10160, 16084, 20105, 20320, 32168, 40210, 64336, 80420, 128672, 160840, 321680, 510667, 643360, 1021334, 2042668, 2553335, 4085336, 5106670, 8170672, 10213340, 16341344, 20426680, 40853360, 81706720]

約数ペア:

[(1, 81706720), (2, 40853360), (4, 20426680), (5, 16341344), (8, 10213340), (10, 8170672), (16, 5106670), (20, 4085336), (32, 2553335), (40, 2042668), (80, 1021334), (127, 643360), (160, 510667), (254, 321680), (508, 160840), (635, 128672), (1016, 80420), (1270, 64336), (2032, 40210), (2540, 32168), (4021, 20320), (4064, 20105), (5080, 16084), (8042, 10160)]