21329992

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 41124600

約数和(自身を除く): 19794608

約数列:

[1, 2, 4, 8, 61, 109, 122, 218, 244, 401, 436, 488, 802, 872, 1604, 3208, 6649, 13298, 24461, 26596, 43709, 48922, 53192, 87418, 97844, 174836, 195688, 349672, 2666249, 5332498, 10664996, 21329992]

約数ペア:

[(1, 21329992), (2, 10664996), (4, 5332498), (8, 2666249), (61, 349672), (109, 195688), (122, 174836), (218, 97844), (244, 87418), (401, 53192), (436, 48922), (488, 43709), (802, 26596), (872, 24461), (1604, 13298), (3208, 6649)]