21997338

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 51397632

約数和(自身を除く): 29400294

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 43, 46, 66, 69, 86, 129, 138, 253, 258, 337, 473, 506, 674, 759, 946, 989, 1011, 1419, 1518, 1978, 2022, 2838, 2967, 3707, 5934, 7414, 7751, 10879, 11121, 14491, 15502, 21758, 22242, 23253, 28982, 32637, 43473, 46506, 65274, 85261, 86946, 159401, 170522, 255783, 318802, 333293, 478203, 511566, 666586, 956406, 999879, 1999758, 3666223, 7332446, 10998669, 21997338]

約数ペア:

[(1, 21997338), (2, 10998669), (3, 7332446), (6, 3666223), (11, 1999758), (22, 999879), (23, 956406), (33, 666586), (43, 511566), (46, 478203), (66, 333293), (69, 318802), (86, 255783), (129, 170522), (138, 159401), (253, 86946), (258, 85261), (337, 65274), (473, 46506), (506, 43473), (674, 32637), (759, 28982), (946, 23253), (989, 22242), (1011, 21758), (1419, 15502), (1518, 14491), (1978, 11121), (2022, 10879), (2838, 7751), (2967, 7414), (3707, 5934)]