19857285

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21013}}^1$

素因数の和:21034

約数の個数: 32

約数和(自身を含む): 40346880

約数和(自身を除く): 20489595

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21013, 63039, 105065, 147091, 189117, 315195, 441273, 567351, 735455, 945585, 1323819, 2206365, 2836755, 3971457, 6619095, 19857285]

約数ペア:

[(1, 19857285), (3, 6619095), (5, 3971457), (7, 2836755), (9, 2206365), (15, 1323819), (21, 945585), (27, 735455), (35, 567351), (45, 441273), (63, 315195), (105, 189117), (135, 147091), (189, 105065), (315, 63039), (945, 21013)]