2018918780

素因数分解:

$2^2\times 5^1\times {\mathrm{4951}}^1\times {\mathrm{20389}}^1$

素因数の和:25349

約数の個数: 24

約数和(自身を含む): 4240793760

約数和(自身を除く): 2221874980

約数列:

[1, 2, 4, 5, 10, 20, 4951, 9902, 19804, 20389, 24755, 40778, 49510, 81556, 99020, 101945, 203890, 407780, 100945939, 201891878, 403783756, 504729695, 1009459390, 2018918780]

約数ペア:

[(1, 2018918780), (2, 1009459390), (4, 504729695), (5, 403783756), (10, 201891878), (20, 100945939), (4951, 407780), (9902, 203890), (19804, 101945), (20389, 99020), (24755, 81556), (40778, 49510)]