21000798735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{115013}}^1$

素因数の和:115112

約数の個数: 64

約数和(自身を含む): 40278822912

約数和(自身を除く): 19278024177

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 47, 105, 111, 141, 185, 235, 259, 329, 555, 705, 777, 987, 1295, 1645, 1739, 3885, 4935, 5217, 8695, 12173, 26085, 36519, 60865, 115013, 182595, 345039, 575065, 805091, 1725195, 2415273, 4025455, 4255481, 5405611, 12076365, 12766443, 16216833, 21277405, 27028055, 29788367, 37839277, 63832215, 81084165, 89365101, 113517831, 148941835, 189196385, 200007607, 446825505, 567589155, 600022821, 1000038035, 1400053249, 3000114105, 4200159747, 7000266245, 21000798735]

約数ペア:

[(1, 21000798735), (3, 7000266245), (5, 4200159747), (7, 3000114105), (15, 1400053249), (21, 1000038035), (35, 600022821), (37, 567589155), (47, 446825505), (105, 200007607), (111, 189196385), (141, 148941835), (185, 113517831), (235, 89365101), (259, 81084165), (329, 63832215), (555, 37839277), (705, 29788367), (777, 27028055), (987, 21277405), (1295, 16216833), (1645, 12766443), (1739, 12076365), (3885, 5405611), (4935, 4255481), (5217, 4025455), (8695, 2415273), (12173, 1725195), (26085, 805091), (36519, 575065), (60865, 345039), (115013, 182595)]