77787220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{3539}}^1$

素因数の和:3712

約数の個数: 48

約数和(自身を含む): 187931520

約数和(自身を除く): 110144300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 3539, 4396, 5495, 7078, 10990, 14156, 17695, 21980, 24773, 35390, 49546, 70780, 99092, 123865, 247730, 495460, 555623, 1111246, 2222492, 2778115, 3889361, 5556230, 7778722, 11112460, 15557444, 19446805, 38893610, 77787220]

約数ペア:

[(1, 77787220), (2, 38893610), (4, 19446805), (5, 15557444), (7, 11112460), (10, 7778722), (14, 5556230), (20, 3889361), (28, 2778115), (35, 2222492), (70, 1111246), (140, 555623), (157, 495460), (314, 247730), (628, 123865), (785, 99092), (1099, 70780), (1570, 49546), (2198, 35390), (3140, 24773), (3539, 21980), (4396, 17695), (5495, 14156), (7078, 10990)]