15641780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1451}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 41713056

約数和(自身を除く): 26071276

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, 1451, 1540, 2156, 2695, 2902, 5390, 5804, 7255, 10157, 10780, 14510, 15961, 20314, 29020, 31922, 40628, 50785, 63844, 71099, 79805, 101570, 111727, 142198, 159610, 203140, 223454, 284396, 319220, 355495, 446908, 558635, 710990, 782089, 1117270, 1421980, 1564178, 2234540, 3128356, 3910445, 7820890, 15641780]

約数ペア:

[(1, 15641780), (2, 7820890), (4, 3910445), (5, 3128356), (7, 2234540), (10, 1564178), (11, 1421980), (14, 1117270), (20, 782089), (22, 710990), (28, 558635), (35, 446908), (44, 355495), (49, 319220), (55, 284396), (70, 223454), (77, 203140), (98, 159610), (110, 142198), (140, 111727), (154, 101570), (196, 79805), (220, 71099), (245, 63844), (308, 50785), (385, 40628), (490, 31922), (539, 29020), (770, 20314), (980, 15961), (1078, 14510), (1451, 10780), (1540, 10157), (2156, 7255), (2695, 5804), (2902, 5390)]