221539390

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{56951}}^1$

素因数の和:57347

約数の個数: 16

約数和(自身を含む): 399803040

約数和(自身を除く): 178263650

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 56951, 113902, 284755, 569510, 22153939, 44307878, 110769695, 221539390]

約数ペア:

[(1, 221539390), (2, 110769695), (5, 44307878), (10, 22153939), (389, 569510), (778, 284755), (1945, 113902), (3890, 56951)]