20841964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{439}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 22622996

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 83, 143, 166, 286, 332, 439, 572, 878, 913, 1079, 1756, 1826, 2158, 3652, 4316, 4829, 5707, 9658, 11414, 11869, 19316, 22828, 23738, 36437, 47476, 62777, 72874, 125554, 145748, 251108, 400807, 473681, 801614, 947362, 1603228, 1894724, 5210491, 10420982, 20841964]

約数ペア:

[(1, 20841964), (2, 10420982), (4, 5210491), (11, 1894724), (13, 1603228), (22, 947362), (26, 801614), (44, 473681), (52, 400807), (83, 251108), (143, 145748), (166, 125554), (286, 72874), (332, 62777), (439, 47476), (572, 36437), (878, 23738), (913, 22828), (1079, 19316), (1756, 11869), (1826, 11414), (2158, 9658), (3652, 5707), (4316, 4829)]