21100020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351667}}^1$

素因数の和:351679

約数の個数: 24

約数和(自身を含む): 59080224

約数和(自身を除く): 37980204

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351667, 703334, 1055001, 1406668, 1758335, 2110002, 3516670, 4220004, 5275005, 7033340, 10550010, 21100020]

約数ペア:

[(1, 21100020), (2, 10550010), (3, 7033340), (4, 5275005), (5, 4220004), (6, 3516670), (10, 2110002), (12, 1758335), (15, 1406668), (20, 1055001), (30, 703334), (60, 351667)]