28261620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{797}}^1$

素因数の和:1009

約数の個数: 72

約数和(自身を含む): 86270184

約数和(自身を除く): 58008564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 797, 985, 1182, 1594, 1773, 1970, 2364, 2391, 2955, 3188, 3546, 3940, 3985, 4782, 5910, 7092, 7173, 7970, 8865, 9564, 11820, 11955, 14346, 15940, 17730, 23910, 28692, 35460, 35865, 47820, 71730, 143460, 157009, 314018, 471027, 628036, 785045, 942054, 1413081, 1570090, 1884108, 2355135, 2826162, 3140180, 4710270, 5652324, 7065405, 9420540, 14130810, 28261620]

約数ペア:

[(1, 28261620), (2, 14130810), (3, 9420540), (4, 7065405), (5, 5652324), (6, 4710270), (9, 3140180), (10, 2826162), (12, 2355135), (15, 1884108), (18, 1570090), (20, 1413081), (30, 942054), (36, 785045), (45, 628036), (60, 471027), (90, 314018), (180, 157009), (197, 143460), (394, 71730), (591, 47820), (788, 35865), (797, 35460), (985, 28692), (1182, 23910), (1594, 17730), (1773, 15940), (1970, 14346), (2364, 11955), (2391, 11820), (2955, 9564), (3188, 8865), (3546, 7970), (3940, 7173), (3985, 7092), (4782, 5910)]