20509566

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:557

約数の個数: 64

約数和(自身を含む): 51757056

約数和(自身を除く): 31247490

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 77, 103, 154, 206, 231, 309, 431, 462, 618, 721, 862, 1133, 1293, 1442, 2163, 2266, 2586, 3017, 3399, 4326, 4741, 6034, 6798, 7931, 9051, 9482, 14223, 15862, 18102, 23793, 28446, 33187, 44393, 47586, 66374, 88786, 99561, 133179, 199122, 266358, 310751, 488323, 621502, 932253, 976646, 1464969, 1864506, 2929938, 3418261, 6836522, 10254783, 20509566]

約数ペア:

[(1, 20509566), (2, 10254783), (3, 6836522), (6, 3418261), (7, 2929938), (11, 1864506), (14, 1464969), (21, 976646), (22, 932253), (33, 621502), (42, 488323), (66, 310751), (77, 266358), (103, 199122), (154, 133179), (206, 99561), (231, 88786), (309, 66374), (431, 47586), (462, 44393), (618, 33187), (721, 28446), (862, 23793), (1133, 18102), (1293, 15862), (1442, 14223), (2163, 9482), (2266, 9051), (2586, 7931), (3017, 6798), (3399, 6034), (4326, 4741)]