420121280

素因数分解:

$2^6\times 5^1\times {\mathrm{397}}^1\times {\mathrm{3307}}^1$

素因数の和:3721

約数の個数: 56

約数和(自身を含む): 1003237008

約数和(自身を除く): 583115728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 397, 794, 1588, 1985, 3176, 3307, 3970, 6352, 6614, 7940, 12704, 13228, 15880, 16535, 25408, 26456, 31760, 33070, 52912, 63520, 66140, 105824, 127040, 132280, 211648, 264560, 529120, 1058240, 1312879, 2625758, 5251516, 6564395, 10503032, 13128790, 21006064, 26257580, 42012128, 52515160, 84024256, 105030320, 210060640, 420121280]

約数ペア:

[(1, 420121280), (2, 210060640), (4, 105030320), (5, 84024256), (8, 52515160), (10, 42012128), (16, 26257580), (20, 21006064), (32, 13128790), (40, 10503032), (64, 6564395), (80, 5251516), (160, 2625758), (320, 1312879), (397, 1058240), (794, 529120), (1588, 264560), (1985, 211648), (3176, 132280), (3307, 127040), (3970, 105824), (6352, 66140), (6614, 63520), (7940, 52912), (12704, 33070), (13228, 31760), (15880, 26456), (16535, 25408)]