21412195

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{397}}^1$

素因数の和:499

約数の個数: 32

約数和(自身を含む): 31177728

約数和(自身を除く): 9765533

約数列:

[1, 5, 7, 23, 35, 67, 115, 161, 335, 397, 469, 805, 1541, 1985, 2345, 2779, 7705, 9131, 10787, 13895, 26599, 45655, 53935, 63917, 132995, 186193, 319585, 611777, 930965, 3058885, 4282439, 21412195]

約数ペア:

[(1, 21412195), (5, 4282439), (7, 3058885), (23, 930965), (35, 611777), (67, 319585), (115, 186193), (161, 132995), (335, 63917), (397, 53935), (469, 45655), (805, 26599), (1541, 13895), (1985, 10787), (2345, 9131), (2779, 7705)]