20395460

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 44416512

約数和(自身を除く): 24021052

約数列:

[1, 2, 4, 5, 10, 20, 53, 71, 106, 142, 212, 265, 271, 284, 355, 530, 542, 710, 1060, 1084, 1355, 1420, 2710, 3763, 5420, 7526, 14363, 15052, 18815, 19241, 28726, 37630, 38482, 57452, 71815, 75260, 76964, 96205, 143630, 192410, 287260, 384820, 1019773, 2039546, 4079092, 5098865, 10197730, 20395460]

約数ペア:

[(1, 20395460), (2, 10197730), (4, 5098865), (5, 4079092), (10, 2039546), (20, 1019773), (53, 384820), (71, 287260), (106, 192410), (142, 143630), (212, 96205), (265, 76964), (271, 75260), (284, 71815), (355, 57452), (530, 38482), (542, 37630), (710, 28726), (1060, 19241), (1084, 18815), (1355, 15052), (1420, 14363), (2710, 7526), (3763, 5420)]