21398418

素因数分解:

$2^1\times 3^4\times {\mathrm{23}}^1\times {\mathrm{5743}}^1$

素因数の和:5780

約数の個数: 40

約数和(自身を含む): 50041728

約数和(自身を除く): 28643310

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 81, 138, 162, 207, 414, 621, 1242, 1863, 3726, 5743, 11486, 17229, 34458, 51687, 103374, 132089, 155061, 264178, 310122, 396267, 465183, 792534, 930366, 1188801, 2377602, 3566403, 7132806, 10699209, 21398418]

約数ペア:

[(1, 21398418), (2, 10699209), (3, 7132806), (6, 3566403), (9, 2377602), (18, 1188801), (23, 930366), (27, 792534), (46, 465183), (54, 396267), (69, 310122), (81, 264178), (138, 155061), (162, 132089), (207, 103374), (414, 51687), (621, 34458), (1242, 17229), (1863, 11486), (3726, 5743)]