20573536

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{641}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 43681680

約数和(自身を除く): 23108144

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 59, 68, 118, 136, 236, 272, 472, 544, 641, 944, 1003, 1282, 1888, 2006, 2564, 4012, 5128, 8024, 10256, 10897, 16048, 20512, 21794, 32096, 37819, 43588, 75638, 87176, 151276, 174352, 302552, 348704, 605104, 642923, 1210208, 1285846, 2571692, 5143384, 10286768, 20573536]

約数ペア:

[(1, 20573536), (2, 10286768), (4, 5143384), (8, 2571692), (16, 1285846), (17, 1210208), (32, 642923), (34, 605104), (59, 348704), (68, 302552), (118, 174352), (136, 151276), (236, 87176), (272, 75638), (472, 43588), (544, 37819), (641, 32096), (944, 21794), (1003, 20512), (1282, 16048), (1888, 10897), (2006, 10256), (2564, 8024), (4012, 5128)]