20517042

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{709}}^1$

素因数の和:787

約数の個数: 64

約数和(自身を含む): 51528960

約数和(自身を除く): 31011918

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 53, 78, 91, 106, 159, 182, 273, 318, 371, 546, 689, 709, 742, 1113, 1378, 1418, 2067, 2127, 2226, 4134, 4254, 4823, 4963, 9217, 9646, 9926, 14469, 14889, 18434, 27651, 28938, 29778, 37577, 55302, 64519, 75154, 112731, 129038, 193557, 225462, 263039, 387114, 488501, 526078, 789117, 977002, 1465503, 1578234, 2931006, 3419507, 6839014, 10258521, 20517042]

約数ペア:

[(1, 20517042), (2, 10258521), (3, 6839014), (6, 3419507), (7, 2931006), (13, 1578234), (14, 1465503), (21, 977002), (26, 789117), (39, 526078), (42, 488501), (53, 387114), (78, 263039), (91, 225462), (106, 193557), (159, 129038), (182, 112731), (273, 75154), (318, 64519), (371, 55302), (546, 37577), (689, 29778), (709, 28938), (742, 27651), (1113, 18434), (1378, 14889), (1418, 14469), (2067, 9926), (2127, 9646), (2226, 9217), (4134, 4963), (4254, 4823)]