21130116920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{163901}}^1$

素因数の和:164216

約数の個数: 64

約数和(自身を含む): 52042163040

約数和(自身を除く): 30912046120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 293, 440, 586, 1172, 1465, 2344, 2930, 3223, 5860, 6446, 11720, 12892, 16115, 25784, 32230, 64460, 128920, 163901, 327802, 655604, 819505, 1311208, 1639010, 1802911, 3278020, 3605822, 6556040, 7211644, 9014555, 14423288, 18029110, 36058220, 48022993, 72116440, 96045986, 192091972, 240114965, 384183944, 480229930, 528252923, 960459860, 1056505846, 1920919720, 2113011692, 2641264615, 4226023384, 5282529230, 10565058460, 21130116920]

約数ペア:

[(1, 21130116920), (2, 10565058460), (4, 5282529230), (5, 4226023384), (8, 2641264615), (10, 2113011692), (11, 1920919720), (20, 1056505846), (22, 960459860), (40, 528252923), (44, 480229930), (55, 384183944), (88, 240114965), (110, 192091972), (220, 96045986), (293, 72116440), (440, 48022993), (586, 36058220), (1172, 18029110), (1465, 14423288), (2344, 9014555), (2930, 7211644), (3223, 6556040), (5860, 3605822), (6446, 3278020), (11720, 1802911), (12892, 1639010), (16115, 1311208), (25784, 819505), (32230, 655604), (64460, 327802), (128920, 163901)]