20723560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3623}}^1$

素因数の和:3658

約数の個数: 64

約数和(自身を含む): 54794880

約数和(自身を除く): 34071320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3623, 5720, 7246, 14492, 18115, 28984, 36230, 39853, 47099, 72460, 79706, 94198, 144920, 159412, 188396, 199265, 235495, 318824, 376792, 398530, 470990, 518089, 797060, 941980, 1036178, 1594120, 1883960, 2072356, 2590445, 4144712, 5180890, 10361780, 20723560]

約数ペア:

[(1, 20723560), (2, 10361780), (4, 5180890), (5, 4144712), (8, 2590445), (10, 2072356), (11, 1883960), (13, 1594120), (20, 1036178), (22, 941980), (26, 797060), (40, 518089), (44, 470990), (52, 398530), (55, 376792), (65, 318824), (88, 235495), (104, 199265), (110, 188396), (130, 159412), (143, 144920), (220, 94198), (260, 79706), (286, 72460), (440, 47099), (520, 39853), (572, 36230), (715, 28984), (1144, 18115), (1430, 14492), (2860, 7246), (3623, 5720)]