20493850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{769}}^1$

素因数の和:835

約数の個数: 48

約数和(自身を含む): 42106680

約数和(自身を除く): 21612830

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 130, 205, 325, 410, 533, 650, 769, 1025, 1066, 1538, 2050, 2665, 3845, 5330, 7690, 9997, 13325, 19225, 19994, 26650, 31529, 38450, 49985, 63058, 99970, 157645, 249925, 315290, 409877, 499850, 788225, 819754, 1576450, 2049385, 4098770, 10246925, 20493850]

約数ペア:

[(1, 20493850), (2, 10246925), (5, 4098770), (10, 2049385), (13, 1576450), (25, 819754), (26, 788225), (41, 499850), (50, 409877), (65, 315290), (82, 249925), (130, 157645), (205, 99970), (325, 63058), (410, 49985), (533, 38450), (650, 31529), (769, 26650), (1025, 19994), (1066, 19225), (1538, 13325), (2050, 9997), (2665, 7690), (3845, 5330)]