18836307

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 32524800

約数和(自身を除く): 13688493

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 239, 417, 567, 717, 973, 1251, 1673, 2151, 2919, 3753, 5019, 6453, 8757, 11259, 15057, 19359, 26271, 33221, 45171, 78813, 99663, 135513, 232547, 298989, 697641, 896967, 2092923, 2690901, 6278769, 18836307]

約数ペア:

[(1, 18836307), (3, 6278769), (7, 2690901), (9, 2092923), (21, 896967), (27, 697641), (63, 298989), (81, 232547), (139, 135513), (189, 99663), (239, 78813), (417, 45171), (567, 33221), (717, 26271), (973, 19359), (1251, 15057), (1673, 11259), (2151, 8757), (2919, 6453), (3753, 5019)]