221738209

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{70237}}^1$

素因数の和:70296

約数の個数: 16

約数和(自身を含む): 283199616

約数和(自身を除く): 61461407

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 70237, 491659, 772607, 2879717, 5408249, 20158019, 31676887, 221738209]

約数ペア:

[(1, 221738209), (7, 31676887), (11, 20158019), (41, 5408249), (77, 2879717), (287, 772607), (451, 491659), (3157, 70237)]