21781092

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1489}}^1$

素因数の和:1572

約数の個数: 48

約数和(自身を含む): 54069120

約数和(自身を除く): 32288028

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 53, 69, 92, 106, 138, 159, 212, 276, 318, 636, 1219, 1489, 2438, 2978, 3657, 4467, 4876, 5956, 7314, 8934, 14628, 17868, 34247, 68494, 78917, 102741, 136988, 157834, 205482, 236751, 315668, 410964, 473502, 947004, 1815091, 3630182, 5445273, 7260364, 10890546, 21781092]

約数ペア:

[(1, 21781092), (2, 10890546), (3, 7260364), (4, 5445273), (6, 3630182), (12, 1815091), (23, 947004), (46, 473502), (53, 410964), (69, 315668), (92, 236751), (106, 205482), (138, 157834), (159, 136988), (212, 102741), (276, 78917), (318, 68494), (636, 34247), (1219, 17868), (1489, 14628), (2438, 8934), (2978, 7314), (3657, 5956), (4467, 4876)]