28406745

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 52970112

約数和(自身を除く): 24563367

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 71, 85, 153, 213, 255, 355, 523, 639, 765, 1065, 1207, 1569, 2615, 3195, 3621, 4707, 6035, 7845, 8891, 10863, 18105, 23535, 26673, 37133, 44455, 54315, 80019, 111399, 133365, 185665, 334197, 400095, 556995, 631261, 1670985, 1893783, 3156305, 5681349, 9468915, 28406745]

約数ペア:

[(1, 28406745), (3, 9468915), (5, 5681349), (9, 3156305), (15, 1893783), (17, 1670985), (45, 631261), (51, 556995), (71, 400095), (85, 334197), (153, 185665), (213, 133365), (255, 111399), (355, 80019), (523, 54315), (639, 44455), (765, 37133), (1065, 26673), (1207, 23535), (1569, 18105), (2615, 10863), (3195, 8891), (3621, 7845), (4707, 6035)]