21838215

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{863}}^1$

素因数の和:1119

約数の個数: 32

約数和(自身を含む): 40144896

約数和(自身を除く): 18306681

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 241, 723, 863, 1205, 1687, 2589, 3615, 4315, 5061, 6041, 8435, 12945, 18123, 25305, 30205, 90615, 207983, 623949, 1039915, 1455881, 3119745, 4367643, 7279405, 21838215]

約数ペア:

[(1, 21838215), (3, 7279405), (5, 4367643), (7, 3119745), (15, 1455881), (21, 1039915), (35, 623949), (105, 207983), (241, 90615), (723, 30205), (863, 25305), (1205, 18123), (1687, 12945), (2589, 8435), (3615, 6041), (4315, 5061)]