21016185

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2057

約数の個数: 32

約数和(自身を含む): 36370560

約数和(自身を除く): 15354375

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 1993, 2109, 3515, 5979, 9965, 10545, 29895, 37867, 73741, 113601, 189335, 221223, 368705, 568005, 1106115, 1401079, 4203237, 7005395, 21016185]

約数ペア:

[(1, 21016185), (3, 7005395), (5, 4203237), (15, 1401079), (19, 1106115), (37, 568005), (57, 368705), (95, 221223), (111, 189335), (185, 113601), (285, 73741), (555, 37867), (703, 29895), (1993, 10545), (2109, 9965), (3515, 5979)]