19943560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5479}}^1$

素因数の和:5510

約数の個数: 64

約数和(自身を含む): 55238400

約数和(自身を除く): 35294840

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, 5479, 10958, 21916, 27395, 38353, 43832, 54790, 71227, 76706, 109580, 142454, 153412, 191765, 219160, 284908, 306824, 356135, 383530, 498589, 569816, 712270, 767060, 997178, 1424540, 1534120, 1994356, 2492945, 2849080, 3988712, 4985890, 9971780, 19943560]

約数ペア:

[(1, 19943560), (2, 9971780), (4, 4985890), (5, 3988712), (7, 2849080), (8, 2492945), (10, 1994356), (13, 1534120), (14, 1424540), (20, 997178), (26, 767060), (28, 712270), (35, 569816), (40, 498589), (52, 383530), (56, 356135), (65, 306824), (70, 284908), (91, 219160), (104, 191765), (130, 153412), (140, 142454), (182, 109580), (260, 76706), (280, 71227), (364, 54790), (455, 43832), (520, 38353), (728, 27395), (910, 21916), (1820, 10958), (3640, 5479)]