21615705050

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{38783}}^1$

素因数の和:39023

約数の個数: 48

約数和(自身を含む): 41032230912

約数和(自身を除く): 19416525862

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 157, 314, 355, 710, 785, 1570, 1775, 3550, 3925, 7850, 11147, 22294, 38783, 55735, 77566, 111470, 193915, 278675, 387830, 557350, 969575, 1939150, 2753593, 5507186, 6088931, 12177862, 13767965, 27535930, 30444655, 60889310, 68839825, 137679650, 152223275, 304446550, 432314101, 864628202, 2161570505, 4323141010, 10807852525, 21615705050]

約数ペア:

[(1, 21615705050), (2, 10807852525), (5, 4323141010), (10, 2161570505), (25, 864628202), (50, 432314101), (71, 304446550), (142, 152223275), (157, 137679650), (314, 68839825), (355, 60889310), (710, 30444655), (785, 27535930), (1570, 13767965), (1775, 12177862), (3550, 6088931), (3925, 5507186), (7850, 2753593), (11147, 1939150), (22294, 969575), (38783, 557350), (55735, 387830), (77566, 278675), (111470, 193915)]