21855015

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{593}}^1$

素因数の和:630

約数の個数: 80

約数和(自身を含む): 48299328

約数和(自身を除く): 26444313

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 81, 91, 105, 117, 135, 189, 195, 273, 315, 351, 405, 455, 567, 585, 593, 819, 945, 1053, 1365, 1755, 1779, 2457, 2835, 2965, 4095, 4151, 5265, 5337, 7371, 7709, 8895, 12285, 12453, 16011, 20755, 23127, 26685, 36855, 37359, 38545, 48033, 53963, 62265, 69381, 80055, 112077, 115635, 161889, 186795, 208143, 240165, 269815, 336231, 346905, 485667, 560385, 624429, 809445, 1040715, 1457001, 1681155, 2428335, 3122145, 4371003, 7285005, 21855015]

約数ペア:

[(1, 21855015), (3, 7285005), (5, 4371003), (7, 3122145), (9, 2428335), (13, 1681155), (15, 1457001), (21, 1040715), (27, 809445), (35, 624429), (39, 560385), (45, 485667), (63, 346905), (65, 336231), (81, 269815), (91, 240165), (105, 208143), (117, 186795), (135, 161889), (189, 115635), (195, 112077), (273, 80055), (315, 69381), (351, 62265), (405, 53963), (455, 48033), (567, 38545), (585, 37359), (593, 36855), (819, 26685), (945, 23127), (1053, 20755), (1365, 16011), (1755, 12453), (1779, 12285), (2457, 8895), (2835, 7709), (2965, 7371), (4095, 5337), (4151, 5265)]