20788040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5711}}^1$

素因数の和:5742

約数の個数: 64

約数和(自身を含む): 57576960

約数和(自身を除く): 36788920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5711, 11422, 22844, 28555, 39977, 45688, 57110, 74243, 79954, 114220, 148486, 159908, 199885, 228440, 296972, 319816, 371215, 399770, 519701, 593944, 742430, 799540, 1039402, 1484860, 1599080, 2078804, 2598505, 2969720, 4157608, 5197010, 10394020, 20788040]

約数ペア:

[(1, 20788040), (2, 10394020), (4, 5197010), (5, 4157608), (7, 2969720), (8, 2598505), (10, 2078804), (13, 1599080), (14, 1484860), (20, 1039402), (26, 799540), (28, 742430), (35, 593944), (40, 519701), (52, 399770), (56, 371215), (65, 319816), (70, 296972), (91, 228440), (104, 199885), (130, 159908), (140, 148486), (182, 114220), (260, 79954), (280, 74243), (364, 57110), (455, 45688), (520, 39977), (728, 28555), (910, 22844), (1820, 11422), (3640, 5711)]