20407155

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1091}}^1$

素因数の和:1171

約数の個数: 32

約数和(自身を含む): 34594560

約数和(自身を除く): 14187405

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1091, 1247, 3273, 3741, 5455, 6235, 16365, 18705, 31639, 46913, 94917, 140739, 158195, 234565, 474585, 703695, 1360477, 4081431, 6802385, 20407155]

約数ペア:

[(1, 20407155), (3, 6802385), (5, 4081431), (15, 1360477), (29, 703695), (43, 474585), (87, 234565), (129, 158195), (145, 140739), (215, 94917), (435, 46913), (645, 31639), (1091, 18705), (1247, 16365), (3273, 6235), (3741, 5455)]