1277883789

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{668699}}^1$

素因数の和:668729

約数の個数: 24

約数和(自身を含む): 2134490400

約数和(自身を除く): 856606611

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 668699, 2006097, 4680893, 8693087, 14042679, 26079261, 32766251, 60851609, 98298753, 182554827, 425961263, 1277883789]

約数ペア:

[(1, 1277883789), (3, 425961263), (7, 182554827), (13, 98298753), (21, 60851609), (39, 32766251), (49, 26079261), (91, 14042679), (147, 8693087), (273, 4680893), (637, 2006097), (1911, 668699)]