21328980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{355483}}^1$

素因数の和:355495

約数の個数: 24

約数和(自身を含む): 59721312

約数和(自身を除く): 38392332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 355483, 710966, 1066449, 1421932, 1777415, 2132898, 3554830, 4265796, 5332245, 7109660, 10664490, 21328980]

約数ペア:

[(1, 21328980), (2, 10664490), (3, 7109660), (4, 5332245), (5, 4265796), (6, 3554830), (10, 2132898), (12, 1777415), (15, 1421932), (20, 1066449), (30, 710966), (60, 355483)]