21465801

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 37939200

約数和(自身を除く): 16473399

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 79, 133, 171, 227, 237, 399, 553, 681, 711, 1197, 1501, 1589, 1659, 2043, 4313, 4503, 4767, 4977, 10507, 12939, 13509, 14301, 17933, 30191, 31521, 38817, 53799, 90573, 94563, 125531, 161397, 271719, 340727, 376593, 1022181, 1129779, 2385089, 3066543, 7155267, 21465801]

約数ペア:

[(1, 21465801), (3, 7155267), (7, 3066543), (9, 2385089), (19, 1129779), (21, 1022181), (57, 376593), (63, 340727), (79, 271719), (133, 161397), (171, 125531), (227, 94563), (237, 90573), (399, 53799), (553, 38817), (681, 31521), (711, 30191), (1197, 17933), (1501, 14301), (1589, 13509), (1659, 12939), (2043, 10507), (4313, 4977), (4503, 4767)]