20897730

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{11057}}^1$

素因数の和:11080

約数の個数: 64

約数和(自身を含む): 63694080

約数和(自身を除く): 42796350

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 11057, 22114, 33171, 55285, 66342, 77399, 99513, 110570, 154798, 165855, 199026, 232197, 298539, 331710, 386995, 464394, 497565, 597078, 696591, 773990, 995130, 1160985, 1393182, 1492695, 2089773, 2321970, 2985390, 3482955, 4179546, 6965910, 10448865, 20897730]

約数ペア:

[(1, 20897730), (2, 10448865), (3, 6965910), (5, 4179546), (6, 3482955), (7, 2985390), (9, 2321970), (10, 2089773), (14, 1492695), (15, 1393182), (18, 1160985), (21, 995130), (27, 773990), (30, 696591), (35, 597078), (42, 497565), (45, 464394), (54, 386995), (63, 331710), (70, 298539), (90, 232197), (105, 199026), (126, 165855), (135, 154798), (189, 110570), (210, 99513), (270, 77399), (315, 66342), (378, 55285), (630, 33171), (945, 22114), (1890, 11057)]