221928189

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{556211}}^1$

素因数の和:556240

約数の個数: 16

約数和(自身を含む): 355975680

約数和(自身を除く): 134047491

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 556211, 1668633, 3893477, 10568009, 11680431, 31704027, 73976063, 221928189]

約数ペア:

[(1, 221928189), (3, 73976063), (7, 31704027), (19, 11680431), (21, 10568009), (57, 3893477), (133, 1668633), (399, 556211)]