21765898

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 42238368

約数和(自身を除く): 20472470

約数列:

[1, 2, 7, 11, 14, 22, 49, 61, 77, 98, 122, 154, 331, 427, 539, 662, 671, 854, 1078, 1342, 2317, 2989, 3641, 4634, 4697, 5978, 7282, 9394, 16219, 20191, 25487, 32438, 32879, 40382, 50974, 65758, 141337, 178409, 222101, 282674, 356818, 444202, 989359, 1554707, 1978718, 3109414, 10882949, 21765898]

約数ペア:

[(1, 21765898), (2, 10882949), (7, 3109414), (11, 1978718), (14, 1554707), (22, 989359), (49, 444202), (61, 356818), (77, 282674), (98, 222101), (122, 178409), (154, 141337), (331, 65758), (427, 50974), (539, 40382), (662, 32879), (671, 32438), (854, 25487), (1078, 20191), (1342, 16219), (2317, 9394), (2989, 7282), (3641, 5978), (4634, 4697)]