21158900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{181}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 53079936

約数和(自身を除く): 31921036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 167, 175, 181, 334, 350, 362, 668, 700, 724, 835, 905, 1169, 1267, 1670, 1810, 2338, 2534, 3340, 3620, 4175, 4525, 4676, 5068, 5845, 6335, 8350, 9050, 11690, 12670, 16700, 18100, 23380, 25340, 29225, 30227, 31675, 58450, 60454, 63350, 116900, 120908, 126700, 151135, 211589, 302270, 423178, 604540, 755675, 846356, 1057945, 1511350, 2115890, 3022700, 4231780, 5289725, 10579450, 21158900]

約数ペア:

[(1, 21158900), (2, 10579450), (4, 5289725), (5, 4231780), (7, 3022700), (10, 2115890), (14, 1511350), (20, 1057945), (25, 846356), (28, 755675), (35, 604540), (50, 423178), (70, 302270), (100, 211589), (140, 151135), (167, 126700), (175, 120908), (181, 116900), (334, 63350), (350, 60454), (362, 58450), (668, 31675), (700, 30227), (724, 29225), (835, 25340), (905, 23380), (1169, 18100), (1267, 16700), (1670, 12670), (1810, 11690), (2338, 9050), (2534, 8350), (3340, 6335), (3620, 5845), (4175, 5068), (4525, 4676)]