199157080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{1301}}^1$

素因数の和:1444

約数の個数: 64

約数和(自身を含む): 464032800

約数和(自身を除く): 264875720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 712, 860, 890, 1301, 1720, 1780, 2602, 3560, 3827, 5204, 6505, 7654, 10408, 13010, 15308, 19135, 26020, 30616, 38270, 52040, 55943, 76540, 111886, 115789, 153080, 223772, 231578, 279715, 447544, 463156, 559430, 578945, 926312, 1118860, 1157890, 2237720, 2315780, 4631560, 4978927, 9957854, 19915708, 24894635, 39831416, 49789270, 99578540, 199157080]

約数ペア:

[(1, 199157080), (2, 99578540), (4, 49789270), (5, 39831416), (8, 24894635), (10, 19915708), (20, 9957854), (40, 4978927), (43, 4631560), (86, 2315780), (89, 2237720), (172, 1157890), (178, 1118860), (215, 926312), (344, 578945), (356, 559430), (430, 463156), (445, 447544), (712, 279715), (860, 231578), (890, 223772), (1301, 153080), (1720, 115789), (1780, 111886), (2602, 76540), (3560, 55943), (3827, 52040), (5204, 38270), (6505, 30616), (7654, 26020), (10408, 19135), (13010, 15308)]