85711780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7951}}^1$

素因数の和:7985

約数の個数: 72

約数和(自身を含む): 228445056

約数和(自身を除く): 142733276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 7951, 10780, 15902, 31804, 39755, 55657, 79510, 87461, 111314, 159020, 174922, 222628, 278285, 349844, 389599, 437305, 556570, 612227, 779198, 874610, 1113140, 1224454, 1558396, 1749220, 1947995, 2448908, 3061135, 3895990, 4285589, 6122270, 7791980, 8571178, 12244540, 17142356, 21427945, 42855890, 85711780]

約数ペア:

[(1, 85711780), (2, 42855890), (4, 21427945), (5, 17142356), (7, 12244540), (10, 8571178), (11, 7791980), (14, 6122270), (20, 4285589), (22, 3895990), (28, 3061135), (35, 2448908), (44, 1947995), (49, 1749220), (55, 1558396), (70, 1224454), (77, 1113140), (98, 874610), (110, 779198), (140, 612227), (154, 556570), (196, 437305), (220, 389599), (245, 349844), (308, 278285), (385, 222628), (490, 174922), (539, 159020), (770, 111314), (980, 87461), (1078, 79510), (1540, 55657), (2156, 39755), (2695, 31804), (5390, 15902), (7951, 10780)]