19869220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{409}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 47940480

約数和(自身を除く): 28071260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 347, 409, 694, 818, 1388, 1636, 1735, 2045, 2429, 2863, 3470, 4090, 4858, 5726, 6940, 8180, 9716, 11452, 12145, 14315, 24290, 28630, 48580, 57260, 141923, 283846, 567692, 709615, 993461, 1419230, 1986922, 2838460, 3973844, 4967305, 9934610, 19869220]

約数ペア:

[(1, 19869220), (2, 9934610), (4, 4967305), (5, 3973844), (7, 2838460), (10, 1986922), (14, 1419230), (20, 993461), (28, 709615), (35, 567692), (70, 283846), (140, 141923), (347, 57260), (409, 48580), (694, 28630), (818, 24290), (1388, 14315), (1636, 12145), (1735, 11452), (2045, 9716), (2429, 8180), (2863, 6940), (3470, 5726), (4090, 4858)]