320469820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{18439}}^1$

素因数の和:18538

約数の個数: 48

約数和(自身を含む): 743500800

約数和(自身を除く): 423030980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 158, 220, 316, 395, 790, 869, 1580, 1738, 3476, 4345, 8690, 17380, 18439, 36878, 73756, 92195, 184390, 202829, 368780, 405658, 811316, 1014145, 1456681, 2028290, 2913362, 4056580, 5826724, 7283405, 14566810, 16023491, 29133620, 32046982, 64093964, 80117455, 160234910, 320469820]

約数ペア:

[(1, 320469820), (2, 160234910), (4, 80117455), (5, 64093964), (10, 32046982), (11, 29133620), (20, 16023491), (22, 14566810), (44, 7283405), (55, 5826724), (79, 4056580), (110, 2913362), (158, 2028290), (220, 1456681), (316, 1014145), (395, 811316), (790, 405658), (869, 368780), (1580, 202829), (1738, 184390), (3476, 92195), (4345, 73756), (8690, 36878), (17380, 18439)]