28289420

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{4007}}^1$

素因数の和:4369

約数の個数: 24

約数和(自身を含む): 59590944

約数和(自身を除く): 31301524

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 4007, 7060, 8014, 16028, 20035, 40070, 80140, 1414471, 2828942, 5657884, 7072355, 14144710, 28289420]

約数ペア:

[(1, 28289420), (2, 14144710), (4, 7072355), (5, 5657884), (10, 2828942), (20, 1414471), (353, 80140), (706, 40070), (1412, 20035), (1765, 16028), (3530, 8014), (4007, 7060)]