1728100745

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:890

約数の個数: 64

約数和(自身を含む): 2635877376

約数和(自身を除く): 907776631

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 197, 391, 595, 641, 805, 985, 1379, 1955, 2737, 3205, 3349, 4487, 4531, 6895, 10897, 13685, 14743, 16745, 22435, 22655, 23443, 31717, 54485, 73715, 76279, 77027, 103201, 117215, 126277, 158585, 250631, 381395, 385135, 516005, 539189, 631385, 883939, 1253155, 1754417, 2146709, 2695945, 2904371, 4419695, 8772085, 10733545, 14521855, 15026963, 20330597, 49374307, 75134815, 101652985, 246871535, 345620149, 1728100745]

約数ペア:

[(1, 1728100745), (5, 345620149), (7, 246871535), (17, 101652985), (23, 75134815), (35, 49374307), (85, 20330597), (115, 15026963), (119, 14521855), (161, 10733545), (197, 8772085), (391, 4419695), (595, 2904371), (641, 2695945), (805, 2146709), (985, 1754417), (1379, 1253155), (1955, 883939), (2737, 631385), (3205, 539189), (3349, 516005), (4487, 385135), (4531, 381395), (6895, 250631), (10897, 158585), (13685, 126277), (14743, 117215), (16745, 103201), (22435, 77027), (22655, 76279), (23443, 73715), (31717, 54485)]