21287214

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90971}}^1$

素因数の和:90992

約数の個数: 24

約数和(自身を含む): 49670712

約数和(自身を除く): 28383498

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90971, 181942, 272913, 545826, 818739, 1182623, 1637478, 2365246, 3547869, 7095738, 10643607, 21287214]

約数ペア:

[(1, 21287214), (2, 10643607), (3, 7095738), (6, 3547869), (9, 2365246), (13, 1637478), (18, 1182623), (26, 818739), (39, 545826), (78, 272913), (117, 181942), (234, 90971)]