28426840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54667}}^1$

素因数の和:54691

約数の個数: 32

約数和(自身を含む): 68881680

約数和(自身を除く): 40454840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54667, 109334, 218668, 273335, 437336, 546670, 710671, 1093340, 1421342, 2186680, 2842684, 3553355, 5685368, 7106710, 14213420, 28426840]

約数ペア:

[(1, 28426840), (2, 14213420), (4, 7106710), (5, 5685368), (8, 3553355), (10, 2842684), (13, 2186680), (20, 1421342), (26, 1093340), (40, 710671), (52, 546670), (65, 437336), (104, 273335), (130, 218668), (260, 109334), (520, 54667)]