20839280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:247

約数の個数: 160

約数和(自身を含む): 64281600

約数和(自身を除く): 43442320

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 34, 35, 40, 44, 55, 56, 68, 70, 77, 80, 85, 88, 110, 112, 119, 136, 140, 154, 170, 176, 187, 199, 220, 238, 272, 280, 308, 340, 374, 385, 398, 440, 476, 560, 595, 616, 680, 748, 770, 796, 880, 935, 952, 995, 1190, 1232, 1309, 1360, 1393, 1496, 1540, 1592, 1870, 1904, 1990, 2189, 2380, 2618, 2786, 2992, 3080, 3184, 3383, 3740, 3980, 4378, 4760, 5236, 5572, 6160, 6545, 6766, 6965, 7480, 7960, 8756, 9520, 10472, 10945, 11144, 13090, 13532, 13930, 14960, 15323, 15920, 16915, 17512, 20944, 21890, 22288, 23681, 26180, 27064, 27860, 30646, 33830, 35024, 37213, 43780, 47362, 52360, 54128, 55720, 61292, 67660, 74426, 76615, 87560, 94724, 104720, 111440, 118405, 122584, 135320, 148852, 153230, 175120, 186065, 189448, 236810, 245168, 260491, 270640, 297704, 306460, 372130, 378896, 473620, 520982, 595408, 612920, 744260, 947240, 1041964, 1225840, 1302455, 1488520, 1894480, 2083928, 2604910, 2977040, 4167856, 5209820, 10419640, 20839280]

約数ペア:

[(1, 20839280), (2, 10419640), (4, 5209820), (5, 4167856), (7, 2977040), (8, 2604910), (10, 2083928), (11, 1894480), (14, 1488520), (16, 1302455), (17, 1225840), (20, 1041964), (22, 947240), (28, 744260), (34, 612920), (35, 595408), (40, 520982), (44, 473620), (55, 378896), (56, 372130), (68, 306460), (70, 297704), (77, 270640), (80, 260491), (85, 245168), (88, 236810), (110, 189448), (112, 186065), (119, 175120), (136, 153230), (140, 148852), (154, 135320), (170, 122584), (176, 118405), (187, 111440), (199, 104720), (220, 94724), (238, 87560), (272, 76615), (280, 74426), (308, 67660), (340, 61292), (374, 55720), (385, 54128), (398, 52360), (440, 47362), (476, 43780), (560, 37213), (595, 35024), (616, 33830), (680, 30646), (748, 27860), (770, 27064), (796, 26180), (880, 23681), (935, 22288), (952, 21890), (995, 20944), (1190, 17512), (1232, 16915), (1309, 15920), (1360, 15323), (1393, 14960), (1496, 13930), (1540, 13532), (1592, 13090), (1870, 11144), (1904, 10945), (1990, 10472), (2189, 9520), (2380, 8756), (2618, 7960), (2786, 7480), (2992, 6965), (3080, 6766), (3184, 6545), (3383, 6160), (3740, 5572), (3980, 5236), (4378, 4760)]