19790478

素因数分解:

$2^1\times 3^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 44366400

約数和(自身を除く): 24575922

約数列:

[1, 2, 3, 6, 9, 18, 47, 94, 141, 149, 157, 282, 298, 314, 423, 447, 471, 846, 894, 942, 1341, 1413, 2682, 2826, 7003, 7379, 14006, 14758, 21009, 22137, 23393, 42018, 44274, 46786, 63027, 66411, 70179, 126054, 132822, 140358, 210537, 421074, 1099471, 2198942, 3298413, 6596826, 9895239, 19790478]

約数ペア:

[(1, 19790478), (2, 9895239), (3, 6596826), (6, 3298413), (9, 2198942), (18, 1099471), (47, 421074), (94, 210537), (141, 140358), (149, 132822), (157, 126054), (282, 70179), (298, 66411), (314, 63027), (423, 46786), (447, 44274), (471, 42018), (846, 23393), (894, 22137), (942, 21009), (1341, 14758), (1413, 14006), (2682, 7379), (2826, 7003)]