30721040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:505

約数の個数: 120

約数和(自身を含む): 88166232

約数和(自身を除く): 57445192

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 461, 476, 490, 560, 595, 680, 784, 833, 922, 952, 980, 1190, 1360, 1666, 1844, 1904, 1960, 2305, 2380, 3227, 3332, 3688, 3920, 4165, 4610, 4760, 6454, 6664, 7376, 7837, 8330, 9220, 9520, 12908, 13328, 15674, 16135, 16660, 18440, 22589, 25816, 31348, 32270, 33320, 36880, 39185, 45178, 51632, 54859, 62696, 64540, 66640, 78370, 90356, 109718, 112945, 125392, 129080, 156740, 180712, 219436, 225890, 258160, 274295, 313480, 361424, 384013, 438872, 451780, 548590, 626960, 768026, 877744, 903560, 1097180, 1536052, 1807120, 1920065, 2194360, 3072104, 3840130, 4388720, 6144208, 7680260, 15360520, 30721040]

約数ペア:

[(1, 30721040), (2, 15360520), (4, 7680260), (5, 6144208), (7, 4388720), (8, 3840130), (10, 3072104), (14, 2194360), (16, 1920065), (17, 1807120), (20, 1536052), (28, 1097180), (34, 903560), (35, 877744), (40, 768026), (49, 626960), (56, 548590), (68, 451780), (70, 438872), (80, 384013), (85, 361424), (98, 313480), (112, 274295), (119, 258160), (136, 225890), (140, 219436), (170, 180712), (196, 156740), (238, 129080), (245, 125392), (272, 112945), (280, 109718), (340, 90356), (392, 78370), (461, 66640), (476, 64540), (490, 62696), (560, 54859), (595, 51632), (680, 45178), (784, 39185), (833, 36880), (922, 33320), (952, 32270), (980, 31348), (1190, 25816), (1360, 22589), (1666, 18440), (1844, 16660), (1904, 16135), (1960, 15674), (2305, 13328), (2380, 12908), (3227, 9520), (3332, 9220), (3688, 8330), (3920, 7837), (4165, 7376), (4610, 6664), (4760, 6454)]