20956430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 23695090

約数列:

[1, 2, 5, 10, 11, 19, 22, 37, 38, 55, 74, 95, 110, 185, 190, 209, 271, 370, 407, 418, 542, 703, 814, 1045, 1355, 1406, 2035, 2090, 2710, 2981, 3515, 4070, 5149, 5962, 7030, 7733, 10027, 10298, 14905, 15466, 20054, 25745, 29810, 38665, 50135, 51490, 56639, 77330, 100270, 110297, 113278, 190513, 220594, 283195, 381026, 551485, 566390, 952565, 1102970, 1905130, 2095643, 4191286, 10478215, 20956430]

約数ペア:

[(1, 20956430), (2, 10478215), (5, 4191286), (10, 2095643), (11, 1905130), (19, 1102970), (22, 952565), (37, 566390), (38, 551485), (55, 381026), (74, 283195), (95, 220594), (110, 190513), (185, 113278), (190, 110297), (209, 100270), (271, 77330), (370, 56639), (407, 51490), (418, 50135), (542, 38665), (703, 29810), (814, 25745), (1045, 20054), (1355, 15466), (1406, 14905), (2035, 10298), (2090, 10027), (2710, 7733), (2981, 7030), (3515, 5962), (4070, 5149)]