18871580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10369}}^1$

素因数の和:10398

約数の個数: 48

約数和(自身を含む): 48780480

約数和(自身を除く): 29908900

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10369, 20738, 41476, 51845, 72583, 103690, 134797, 145166, 207380, 269594, 290332, 362915, 539188, 673985, 725830, 943579, 1347970, 1451660, 1887158, 2695940, 3774316, 4717895, 9435790, 18871580]

約数ペア:

[(1, 18871580), (2, 9435790), (4, 4717895), (5, 3774316), (7, 2695940), (10, 1887158), (13, 1451660), (14, 1347970), (20, 943579), (26, 725830), (28, 673985), (35, 539188), (52, 362915), (65, 290332), (70, 269594), (91, 207380), (130, 145166), (140, 134797), (182, 103690), (260, 72583), (364, 51845), (455, 41476), (910, 20738), (1820, 10369)]