20358572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 40007520

約数和(自身を除く): 19648948

約数列:

[1, 2, 4, 13, 26, 52, 53, 83, 89, 106, 166, 178, 212, 332, 356, 689, 1079, 1157, 1378, 2158, 2314, 2756, 4316, 4399, 4628, 4717, 7387, 8798, 9434, 14774, 17596, 18868, 29548, 57187, 61321, 96031, 114374, 122642, 192062, 228748, 245284, 384124, 391511, 783022, 1566044, 5089643, 10179286, 20358572]

約数ペア:

[(1, 20358572), (2, 10179286), (4, 5089643), (13, 1566044), (26, 783022), (52, 391511), (53, 384124), (83, 245284), (89, 228748), (106, 192062), (166, 122642), (178, 114374), (212, 96031), (332, 61321), (356, 57187), (689, 29548), (1079, 18868), (1157, 17596), (1378, 14774), (2158, 9434), (2314, 8798), (2756, 7387), (4316, 4717), (4399, 4628)]