20406225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{827}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 39426048

約数和(自身を除く): 19019823

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 525, 705, 827, 987, 1175, 1645, 2481, 3525, 4135, 4935, 5789, 8225, 12405, 17367, 20675, 24675, 28945, 38869, 62025, 86835, 116607, 144725, 194345, 272083, 434175, 583035, 816249, 971725, 1360415, 2915175, 4081245, 6802075, 20406225]

約数ペア:

[(1, 20406225), (3, 6802075), (5, 4081245), (7, 2915175), (15, 1360415), (21, 971725), (25, 816249), (35, 583035), (47, 434175), (75, 272083), (105, 194345), (141, 144725), (175, 116607), (235, 86835), (329, 62025), (525, 38869), (705, 28945), (827, 24675), (987, 20675), (1175, 17367), (1645, 12405), (2481, 8225), (3525, 5789), (4135, 4935)]