20125172480

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{11287}}^1$

素因数の和:11514

約数の個数: 144

約数和(自身を含む): 55374412800

約数和(自身を除く): 35249240320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 199, 224, 256, 280, 320, 398, 448, 560, 640, 796, 896, 995, 1120, 1280, 1393, 1592, 1792, 1990, 2240, 2786, 3184, 3980, 4480, 5572, 6368, 6965, 7960, 8960, 11144, 11287, 12736, 13930, 15920, 22288, 22574, 25472, 27860, 31840, 44576, 45148, 50944, 55720, 56435, 63680, 79009, 89152, 90296, 111440, 112870, 127360, 158018, 178304, 180592, 222880, 225740, 254720, 316036, 356608, 361184, 395045, 445760, 451480, 632072, 722368, 790090, 891520, 902960, 1264144, 1444736, 1580180, 1783040, 1805920, 2246113, 2528288, 2889472, 3160360, 3611840, 4492226, 5056576, 6320720, 7223680, 8984452, 10113152, 11230565, 12641440, 14447360, 15722791, 17968904, 20226304, 22461130, 25282880, 31445582, 35937808, 44922260, 50565760, 62891164, 71875616, 78613955, 89844520, 101131520, 125782328, 143751232, 157227910, 179689040, 251564656, 287502464, 314455820, 359378080, 503129312, 575004928, 628911640, 718756160, 1006258624, 1257823280, 1437512320, 2012517248, 2515646560, 2875024640, 4025034496, 5031293120, 10062586240, 20125172480]

約数ペア:

[(1, 20125172480), (2, 10062586240), (4, 5031293120), (5, 4025034496), (7, 2875024640), (8, 2515646560), (10, 2012517248), (14, 1437512320), (16, 1257823280), (20, 1006258624), (28, 718756160), (32, 628911640), (35, 575004928), (40, 503129312), (56, 359378080), (64, 314455820), (70, 287502464), (80, 251564656), (112, 179689040), (128, 157227910), (140, 143751232), (160, 125782328), (199, 101131520), (224, 89844520), (256, 78613955), (280, 71875616), (320, 62891164), (398, 50565760), (448, 44922260), (560, 35937808), (640, 31445582), (796, 25282880), (896, 22461130), (995, 20226304), (1120, 17968904), (1280, 15722791), (1393, 14447360), (1592, 12641440), (1792, 11230565), (1990, 10113152), (2240, 8984452), (2786, 7223680), (3184, 6320720), (3980, 5056576), (4480, 4492226), (5572, 3611840), (6368, 3160360), (6965, 2889472), (7960, 2528288), (8960, 2246113), (11144, 1805920), (11287, 1783040), (12736, 1580180), (13930, 1444736), (15920, 1264144), (22288, 902960), (22574, 891520), (25472, 790090), (27860, 722368), (31840, 632072), (44576, 451480), (45148, 445760), (50944, 395045), (55720, 361184), (56435, 356608), (63680, 316036), (79009, 254720), (89152, 225740), (90296, 222880), (111440, 180592), (112870, 178304), (127360, 158018)]