21543795

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5261}}^1$

素因数の和:5292

約数の個数: 48

約数和(自身を含む): 45968832

約数和(自身を除く): 24425037

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 5261, 15783, 26305, 36827, 47349, 68393, 78915, 110481, 184135, 205179, 236745, 331443, 341965, 478751, 552405, 615537, 1025895, 1436253, 1657215, 2393755, 3077685, 4308759, 7181265, 21543795]

約数ペア:

[(1, 21543795), (3, 7181265), (5, 4308759), (7, 3077685), (9, 2393755), (13, 1657215), (15, 1436253), (21, 1025895), (35, 615537), (39, 552405), (45, 478751), (63, 341965), (65, 331443), (91, 236745), (105, 205179), (117, 184135), (195, 110481), (273, 78915), (315, 68393), (455, 47349), (585, 36827), (819, 26305), (1365, 15783), (4095, 5261)]