20337520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1579}}^1$

素因数の和:1622

約数の個数: 80

約数和(自身を含む): 56424960

約数和(自身を除く): 36087440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1579, 1610, 1840, 2576, 3158, 3220, 6316, 6440, 7895, 11053, 12632, 12880, 15790, 22106, 25264, 31580, 36317, 44212, 55265, 63160, 72634, 88424, 110530, 126320, 145268, 176848, 181585, 221060, 254219, 290536, 363170, 442120, 508438, 581072, 726340, 884240, 1016876, 1271095, 1452680, 2033752, 2542190, 2905360, 4067504, 5084380, 10168760, 20337520]

約数ペア:

[(1, 20337520), (2, 10168760), (4, 5084380), (5, 4067504), (7, 2905360), (8, 2542190), (10, 2033752), (14, 1452680), (16, 1271095), (20, 1016876), (23, 884240), (28, 726340), (35, 581072), (40, 508438), (46, 442120), (56, 363170), (70, 290536), (80, 254219), (92, 221060), (112, 181585), (115, 176848), (140, 145268), (161, 126320), (184, 110530), (230, 88424), (280, 72634), (322, 63160), (368, 55265), (460, 44212), (560, 36317), (644, 31580), (805, 25264), (920, 22106), (1288, 15790), (1579, 12880), (1610, 12632), (1840, 11053), (2576, 7895), (3158, 6440), (3220, 6316)]