18801081

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:342

約数の個数: 36

約数和(自身を含む): 30146688

約数和(自身を除く): 11345607

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 169, 263, 423, 507, 611, 789, 1521, 1833, 2367, 3419, 5499, 7943, 10257, 12361, 23829, 30771, 37083, 44447, 71487, 111249, 133341, 160693, 400023, 482079, 1446237, 2089009, 6267027, 18801081]

約数ペア:

[(1, 18801081), (3, 6267027), (9, 2089009), (13, 1446237), (39, 482079), (47, 400023), (117, 160693), (141, 133341), (169, 111249), (263, 71487), (423, 44447), (507, 37083), (611, 30771), (789, 23829), (1521, 12361), (1833, 10257), (2367, 7943), (3419, 5499)]