28108900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 64120896

約数和(自身を除く): 36011996

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 71, 74, 100, 107, 142, 148, 185, 214, 284, 355, 370, 428, 535, 710, 740, 925, 1070, 1420, 1775, 1850, 2140, 2627, 2675, 3550, 3700, 3959, 5254, 5350, 7100, 7597, 7918, 10508, 10700, 13135, 15194, 15836, 19795, 26270, 30388, 37985, 39590, 52540, 65675, 75970, 79180, 98975, 131350, 151940, 189925, 197950, 262700, 281089, 379850, 395900, 562178, 759700, 1124356, 1405445, 2810890, 5621780, 7027225, 14054450, 28108900]

約数ペア:

[(1, 28108900), (2, 14054450), (4, 7027225), (5, 5621780), (10, 2810890), (20, 1405445), (25, 1124356), (37, 759700), (50, 562178), (71, 395900), (74, 379850), (100, 281089), (107, 262700), (142, 197950), (148, 189925), (185, 151940), (214, 131350), (284, 98975), (355, 79180), (370, 75970), (428, 65675), (535, 52540), (710, 39590), (740, 37985), (925, 30388), (1070, 26270), (1420, 19795), (1775, 15836), (1850, 15194), (2140, 13135), (2627, 10700), (2675, 10508), (3550, 7918), (3700, 7597), (3959, 7100), (5254, 5350)]