21541520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1$

素因数の和:313

約数の個数: 160

約数和(自身を含む): 67495680

約数和(自身を除く): 45954160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 269, 280, 286, 308, 364, 385, 440, 455, 520, 538, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1040, 1076, 1144, 1232, 1345, 1430, 1456, 1540, 1820, 1883, 2002, 2152, 2288, 2690, 2860, 2959, 3080, 3497, 3640, 3766, 4004, 4304, 5005, 5380, 5720, 5918, 6160, 6994, 7280, 7532, 8008, 9415, 10010, 10760, 11440, 11836, 13988, 14795, 15064, 16016, 17485, 18830, 20020, 20713, 21520, 23672, 24479, 27976, 29590, 30128, 34970, 37660, 38467, 40040, 41426, 47344, 48958, 55952, 59180, 69940, 75320, 76934, 80080, 82852, 97916, 103565, 118360, 122395, 139880, 150640, 153868, 165704, 192335, 195832, 207130, 236720, 244790, 269269, 279760, 307736, 331408, 384670, 391664, 414260, 489580, 538538, 615472, 769340, 828520, 979160, 1077076, 1346345, 1538680, 1657040, 1958320, 2154152, 2692690, 3077360, 4308304, 5385380, 10770760, 21541520]

約数ペア:

[(1, 21541520), (2, 10770760), (4, 5385380), (5, 4308304), (7, 3077360), (8, 2692690), (10, 2154152), (11, 1958320), (13, 1657040), (14, 1538680), (16, 1346345), (20, 1077076), (22, 979160), (26, 828520), (28, 769340), (35, 615472), (40, 538538), (44, 489580), (52, 414260), (55, 391664), (56, 384670), (65, 331408), (70, 307736), (77, 279760), (80, 269269), (88, 244790), (91, 236720), (104, 207130), (110, 195832), (112, 192335), (130, 165704), (140, 153868), (143, 150640), (154, 139880), (176, 122395), (182, 118360), (208, 103565), (220, 97916), (260, 82852), (269, 80080), (280, 76934), (286, 75320), (308, 69940), (364, 59180), (385, 55952), (440, 48958), (455, 47344), (520, 41426), (538, 40040), (560, 38467), (572, 37660), (616, 34970), (715, 30128), (728, 29590), (770, 27976), (880, 24479), (910, 23672), (1001, 21520), (1040, 20713), (1076, 20020), (1144, 18830), (1232, 17485), (1345, 16016), (1430, 15064), (1456, 14795), (1540, 13988), (1820, 11836), (1883, 11440), (2002, 10760), (2152, 10010), (2288, 9415), (2690, 8008), (2860, 7532), (2959, 7280), (3080, 6994), (3497, 6160), (3640, 5918), (3766, 5720), (4004, 5380), (4304, 5005)]