21409695

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6701}}^1$

素因数の和:6783

約数の個数: 24

約数和(自身を含む): 37638432

約数和(自身を除く): 16228737

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6701, 20103, 33505, 60309, 100515, 301545, 475771, 1427313, 2378855, 4281939, 7136565, 21409695]

約数ペア:

[(1, 21409695), (3, 7136565), (5, 4281939), (9, 2378855), (15, 1427313), (45, 475771), (71, 301545), (213, 100515), (355, 60309), (639, 33505), (1065, 20103), (3195, 6701)]