19391645

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 31933440

約数和(自身を除く): 12541795

約数列:

[1, 5, 7, 13, 17, 23, 35, 65, 85, 91, 109, 115, 119, 161, 221, 299, 391, 455, 545, 595, 763, 805, 1105, 1417, 1495, 1547, 1853, 1955, 2093, 2507, 2737, 3815, 5083, 7085, 7735, 9265, 9919, 10465, 12535, 12971, 13685, 17549, 24089, 25415, 32591, 35581, 42619, 49595, 64855, 87745, 120445, 162955, 168623, 177905, 213095, 228137, 298333, 554047, 843115, 1140685, 1491665, 2770235, 3878329, 19391645]

約数ペア:

[(1, 19391645), (5, 3878329), (7, 2770235), (13, 1491665), (17, 1140685), (23, 843115), (35, 554047), (65, 298333), (85, 228137), (91, 213095), (109, 177905), (115, 168623), (119, 162955), (161, 120445), (221, 87745), (299, 64855), (391, 49595), (455, 42619), (545, 35581), (595, 32591), (763, 25415), (805, 24089), (1105, 17549), (1417, 13685), (1495, 12971), (1547, 12535), (1853, 10465), (1955, 9919), (2093, 9265), (2507, 7735), (2737, 7085), (3815, 5083)]