21428055

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{593}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 41142816

約数和(自身を除く): 19714761

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 73, 99, 165, 219, 365, 495, 593, 657, 803, 1095, 1779, 2409, 2965, 3285, 4015, 5337, 6523, 7227, 8895, 12045, 19569, 26685, 32615, 36135, 43289, 58707, 97845, 129867, 216445, 293535, 389601, 476179, 649335, 1428537, 1948005, 2380895, 4285611, 7142685, 21428055]

約数ペア:

[(1, 21428055), (3, 7142685), (5, 4285611), (9, 2380895), (11, 1948005), (15, 1428537), (33, 649335), (45, 476179), (55, 389601), (73, 293535), (99, 216445), (165, 129867), (219, 97845), (365, 58707), (495, 43289), (593, 36135), (657, 32615), (803, 26685), (1095, 19569), (1779, 12045), (2409, 8895), (2965, 7227), (3285, 6523), (4015, 5337)]