68487280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{9619}}^1$

素因数の和:9721

約数の個数: 40

約数和(自身を含む): 161038800

約数和(自身を除く): 92551520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 9619, 19238, 38476, 48095, 76952, 96190, 153904, 192380, 384760, 769520, 856091, 1712182, 3424364, 4280455, 6848728, 8560910, 13697456, 17121820, 34243640, 68487280]

約数ペア:

[(1, 68487280), (2, 34243640), (4, 17121820), (5, 13697456), (8, 8560910), (10, 6848728), (16, 4280455), (20, 3424364), (40, 1712182), (80, 856091), (89, 769520), (178, 384760), (356, 192380), (445, 153904), (712, 96190), (890, 76952), (1424, 48095), (1780, 38476), (3560, 19238), (7120, 9619)]