21051394

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20752382

約数列:

[1, 2, 7, 13, 14, 23, 26, 46, 47, 91, 94, 107, 161, 182, 214, 299, 322, 329, 598, 611, 658, 749, 1081, 1222, 1391, 1498, 2093, 2162, 2461, 2782, 4186, 4277, 4922, 5029, 7567, 8554, 9737, 10058, 14053, 15134, 17227, 19474, 28106, 31993, 34454, 35203, 63986, 65377, 70406, 98371, 115667, 130754, 196742, 223951, 231334, 447902, 457639, 809669, 915278, 1503671, 1619338, 3007342, 10525697, 21051394]

約数ペア:

[(1, 21051394), (2, 10525697), (7, 3007342), (13, 1619338), (14, 1503671), (23, 915278), (26, 809669), (46, 457639), (47, 447902), (91, 231334), (94, 223951), (107, 196742), (161, 130754), (182, 115667), (214, 98371), (299, 70406), (322, 65377), (329, 63986), (598, 35203), (611, 34454), (658, 31993), (749, 28106), (1081, 19474), (1222, 17227), (1391, 15134), (1498, 14053), (2093, 10058), (2162, 9737), (2461, 8554), (2782, 7567), (4186, 5029), (4277, 4922)]