21438760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3329}}^1$

素因数の和:3370

約数の個数: 64

約数和(自身を含む): 57542400

約数和(自身を除く): 36103640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 3329, 6440, 6658, 13316, 16645, 23303, 26632, 33290, 46606, 66580, 76567, 93212, 116515, 133160, 153134, 186424, 233030, 306268, 382835, 466060, 535969, 612536, 765670, 932120, 1071938, 1531340, 2143876, 2679845, 3062680, 4287752, 5359690, 10719380, 21438760]

約数ペア:

[(1, 21438760), (2, 10719380), (4, 5359690), (5, 4287752), (7, 3062680), (8, 2679845), (10, 2143876), (14, 1531340), (20, 1071938), (23, 932120), (28, 765670), (35, 612536), (40, 535969), (46, 466060), (56, 382835), (70, 306268), (92, 233030), (115, 186424), (140, 153134), (161, 133160), (184, 116515), (230, 93212), (280, 76567), (322, 66580), (460, 46606), (644, 33290), (805, 26632), (920, 23303), (1288, 16645), (1610, 13316), (3220, 6658), (3329, 6440)]