28615280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4019}}^1$

素因数の和:4121

約数の個数: 40

約数和(自身を含む): 67294800

約数和(自身を除く): 38679520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 4019, 7120, 8038, 16076, 20095, 32152, 40190, 64304, 80380, 160760, 321520, 357691, 715382, 1430764, 1788455, 2861528, 3576910, 5723056, 7153820, 14307640, 28615280]

約数ペア:

[(1, 28615280), (2, 14307640), (4, 7153820), (5, 5723056), (8, 3576910), (10, 2861528), (16, 1788455), (20, 1430764), (40, 715382), (80, 357691), (89, 321520), (178, 160760), (356, 80380), (445, 64304), (712, 40190), (890, 32152), (1424, 20095), (1780, 16076), (3560, 8038), (4019, 7120)]