81685240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22441}}^1$

素因数の和:22472

約数の個数: 64

約数和(自身を含む): 226215360

約数和(自身を除く): 144530120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 22441, 44882, 89764, 112205, 157087, 179528, 224410, 291733, 314174, 448820, 583466, 628348, 785435, 897640, 1166932, 1256696, 1458665, 1570870, 2042131, 2333864, 2917330, 3141740, 4084262, 5834660, 6283480, 8168524, 10210655, 11669320, 16337048, 20421310, 40842620, 81685240]

約数ペア:

[(1, 81685240), (2, 40842620), (4, 20421310), (5, 16337048), (7, 11669320), (8, 10210655), (10, 8168524), (13, 6283480), (14, 5834660), (20, 4084262), (26, 3141740), (28, 2917330), (35, 2333864), (40, 2042131), (52, 1570870), (56, 1458665), (65, 1256696), (70, 1166932), (91, 897640), (104, 785435), (130, 628348), (140, 583466), (182, 448820), (260, 314174), (280, 291733), (364, 224410), (455, 179528), (520, 157087), (728, 112205), (910, 89764), (1820, 44882), (3640, 22441)]