18875535

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 35792352

約数和(自身を除く): 16916817

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 61, 105, 147, 183, 245, 305, 421, 427, 735, 915, 1263, 1281, 2105, 2135, 2947, 2989, 6315, 6405, 8841, 8967, 14735, 14945, 20629, 25681, 44205, 44835, 61887, 77043, 103145, 128405, 179767, 309435, 385215, 539301, 898835, 1258369, 2696505, 3775107, 6291845, 18875535]

約数ペア:

[(1, 18875535), (3, 6291845), (5, 3775107), (7, 2696505), (15, 1258369), (21, 898835), (35, 539301), (49, 385215), (61, 309435), (105, 179767), (147, 128405), (183, 103145), (245, 77043), (305, 61887), (421, 44835), (427, 44205), (735, 25681), (915, 20629), (1263, 14945), (1281, 14735), (2105, 8967), (2135, 8841), (2947, 6405), (2989, 6315)]