19981676

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 41522208

約数和(自身を除く): 21540532

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 181, 193, 286, 362, 386, 572, 724, 772, 1991, 2123, 2353, 2509, 3982, 4246, 4706, 5018, 7964, 8492, 9412, 10036, 25883, 27599, 34933, 51766, 55198, 69866, 103532, 110396, 139732, 384263, 454129, 768526, 908258, 1537052, 1816516, 4995419, 9990838, 19981676]

約数ペア:

[(1, 19981676), (2, 9990838), (4, 4995419), (11, 1816516), (13, 1537052), (22, 908258), (26, 768526), (44, 454129), (52, 384263), (143, 139732), (181, 110396), (193, 103532), (286, 69866), (362, 55198), (386, 51766), (572, 34933), (724, 27599), (772, 25883), (1991, 10036), (2123, 9412), (2353, 8492), (2509, 7964), (3982, 5018), (4246, 4706)]