78718780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{103}}^2$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 194376672

約数和(自身を除く): 115657892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 103, 106, 140, 206, 212, 265, 371, 412, 515, 530, 721, 742, 1030, 1060, 1442, 1484, 1855, 2060, 2884, 3605, 3710, 5459, 7210, 7420, 10609, 10918, 14420, 21218, 21836, 27295, 38213, 42436, 53045, 54590, 74263, 76426, 106090, 109180, 148526, 152852, 191065, 212180, 297052, 371315, 382130, 562277, 742630, 764260, 1124554, 1485260, 2249108, 2811385, 3935939, 5622770, 7871878, 11245540, 15743756, 19679695, 39359390, 78718780]

約数ペア:

[(1, 78718780), (2, 39359390), (4, 19679695), (5, 15743756), (7, 11245540), (10, 7871878), (14, 5622770), (20, 3935939), (28, 2811385), (35, 2249108), (53, 1485260), (70, 1124554), (103, 764260), (106, 742630), (140, 562277), (206, 382130), (212, 371315), (265, 297052), (371, 212180), (412, 191065), (515, 152852), (530, 148526), (721, 109180), (742, 106090), (1030, 76426), (1060, 74263), (1442, 54590), (1484, 53045), (1855, 42436), (2060, 38213), (2884, 27295), (3605, 21836), (3710, 21218), (5459, 14420), (7210, 10918), (7420, 10609)]