18778968

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{20063}}^1$

素因数の和:20088

約数の個数: 48

約数和(自身を含む): 54774720

約数和(自身を除く): 35995752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 20063, 40126, 60189, 80252, 120378, 160504, 180567, 240756, 260819, 361134, 481512, 521638, 722268, 782457, 1043276, 1444536, 1564914, 2086552, 2347371, 3129828, 4694742, 6259656, 9389484, 18778968]

約数ペア:

[(1, 18778968), (2, 9389484), (3, 6259656), (4, 4694742), (6, 3129828), (8, 2347371), (9, 2086552), (12, 1564914), (13, 1444536), (18, 1043276), (24, 782457), (26, 722268), (36, 521638), (39, 481512), (52, 361134), (72, 260819), (78, 240756), (104, 180567), (117, 160504), (156, 120378), (234, 80252), (312, 60189), (468, 40126), (936, 20063)]