21948220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{743}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 52996608

約数和(自身を除く): 31048388

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 211, 422, 743, 844, 1055, 1477, 1486, 2110, 2954, 2972, 3715, 4220, 5201, 5908, 7385, 7430, 10402, 14770, 14860, 20804, 26005, 29540, 52010, 104020, 156773, 313546, 627092, 783865, 1097411, 1567730, 2194822, 3135460, 4389644, 5487055, 10974110, 21948220]

約数ペア:

[(1, 21948220), (2, 10974110), (4, 5487055), (5, 4389644), (7, 3135460), (10, 2194822), (14, 1567730), (20, 1097411), (28, 783865), (35, 627092), (70, 313546), (140, 156773), (211, 104020), (422, 52010), (743, 29540), (844, 26005), (1055, 20804), (1477, 14860), (1486, 14770), (2110, 10402), (2954, 7430), (2972, 7385), (3715, 5908), (4220, 5201)]