21165658

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:502

約数の個数: 32

約数和(自身を含む): 35533440

約数和(自身を除く): 14367782

約数列:

[1, 2, 19, 23, 38, 46, 61, 122, 397, 437, 794, 874, 1159, 1403, 2318, 2806, 7543, 9131, 15086, 18262, 24217, 26657, 48434, 53314, 173489, 346978, 460123, 556991, 920246, 1113982, 10582829, 21165658]

約数ペア:

[(1, 21165658), (2, 10582829), (19, 1113982), (23, 920246), (38, 556991), (46, 460123), (61, 346978), (122, 173489), (397, 53314), (437, 48434), (794, 26657), (874, 24217), (1159, 18262), (1403, 15086), (2318, 9131), (2806, 7543)]