20012001

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 29410560

約数和(自身を除く): 9398559

約数列:

[1, 3, 23, 29, 69, 73, 87, 137, 219, 411, 667, 1679, 2001, 2117, 3151, 3973, 5037, 6351, 9453, 10001, 11919, 30003, 48691, 91379, 146073, 230023, 274137, 290029, 690069, 870087, 6670667, 20012001]

約数ペア:

[(1, 20012001), (3, 6670667), (23, 870087), (29, 690069), (69, 290029), (73, 274137), (87, 230023), (137, 146073), (219, 91379), (411, 48691), (667, 30003), (1679, 11919), (2001, 10001), (2117, 9453), (3151, 6351), (3973, 5037)]