1540805320

素因数分解:

$2^3\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{19289}}^1$

素因数の和:21297

約数の個数: 32

約数和(自身を含む): 3468727800

約数和(自身を除く): 1927922480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1997, 3994, 7988, 9985, 15976, 19289, 19970, 38578, 39940, 77156, 79880, 96445, 154312, 192890, 385780, 771560, 38520133, 77040266, 154080532, 192600665, 308161064, 385201330, 770402660, 1540805320]

約数ペア:

[(1, 1540805320), (2, 770402660), (4, 385201330), (5, 308161064), (8, 192600665), (10, 154080532), (20, 77040266), (40, 38520133), (1997, 771560), (3994, 385780), (7988, 192890), (9985, 154312), (15976, 96445), (19289, 79880), (19970, 77156), (38578, 39940)]