20734985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 28563840

約数和(自身を除く): 7828855

約数列:

[1, 5, 17, 19, 37, 85, 95, 185, 323, 347, 629, 703, 1615, 1735, 3145, 3515, 5899, 6593, 11951, 12839, 29495, 32965, 59755, 64195, 112081, 218263, 243941, 560405, 1091315, 1219705, 4146997, 20734985]

約数ペア:

[(1, 20734985), (5, 4146997), (17, 1219705), (19, 1091315), (37, 560405), (85, 243941), (95, 218263), (185, 112081), (323, 64195), (347, 59755), (629, 32965), (703, 29495), (1615, 12839), (1735, 11951), (3145, 6593), (3515, 5899)]