21853440

素因数分解:

$2^8\times 3^2\times 5^1\times 7^1\times {\mathrm{271}}^1$

素因数の和:305

約数の個数: 216

約数和(自身を含む): 86731008

約数和(自身を除く): 64877568

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 271, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 542, 560, 576, 630, 640, 672, 720, 768, 813, 840, 896, 960, 1008, 1084, 1120, 1152, 1260, 1280, 1344, 1355, 1440, 1626, 1680, 1792, 1897, 1920, 2016, 2168, 2240, 2304, 2439, 2520, 2688, 2710, 2880, 3252, 3360, 3794, 3840, 4032, 4065, 4336, 4480, 4878, 5040, 5376, 5420, 5691, 5760, 6504, 6720, 7588, 8064, 8130, 8672, 8960, 9485, 9756, 10080, 10840, 11382, 11520, 12195, 13008, 13440, 15176, 16128, 16260, 17073, 17344, 18970, 19512, 20160, 21680, 22764, 24390, 26016, 26880, 28455, 30352, 32520, 34146, 34688, 37940, 39024, 40320, 43360, 45528, 48780, 52032, 56910, 60704, 65040, 68292, 69376, 75880, 78048, 80640, 85365, 86720, 91056, 97560, 104064, 113820, 121408, 130080, 136584, 151760, 156096, 170730, 173440, 182112, 195120, 208128, 227640, 242816, 260160, 273168, 303520, 312192, 341460, 346880, 364224, 390240, 455280, 485632, 520320, 546336, 607040, 624384, 682920, 728448, 780480, 910560, 1040640, 1092672, 1214080, 1365840, 1456896, 1560960, 1821120, 2185344, 2428160, 2731680, 3121920, 3642240, 4370688, 5463360, 7284480, 10926720, 21853440]

約数ペア:

[(1, 21853440), (2, 10926720), (3, 7284480), (4, 5463360), (5, 4370688), (6, 3642240), (7, 3121920), (8, 2731680), (9, 2428160), (10, 2185344), (12, 1821120), (14, 1560960), (15, 1456896), (16, 1365840), (18, 1214080), (20, 1092672), (21, 1040640), (24, 910560), (28, 780480), (30, 728448), (32, 682920), (35, 624384), (36, 607040), (40, 546336), (42, 520320), (45, 485632), (48, 455280), (56, 390240), (60, 364224), (63, 346880), (64, 341460), (70, 312192), (72, 303520), (80, 273168), (84, 260160), (90, 242816), (96, 227640), (105, 208128), (112, 195120), (120, 182112), (126, 173440), (128, 170730), (140, 156096), (144, 151760), (160, 136584), (168, 130080), (180, 121408), (192, 113820), (210, 104064), (224, 97560), (240, 91056), (252, 86720), (256, 85365), (271, 80640), (280, 78048), (288, 75880), (315, 69376), (320, 68292), (336, 65040), (360, 60704), (384, 56910), (420, 52032), (448, 48780), (480, 45528), (504, 43360), (542, 40320), (560, 39024), (576, 37940), (630, 34688), (640, 34146), (672, 32520), (720, 30352), (768, 28455), (813, 26880), (840, 26016), (896, 24390), (960, 22764), (1008, 21680), (1084, 20160), (1120, 19512), (1152, 18970), (1260, 17344), (1280, 17073), (1344, 16260), (1355, 16128), (1440, 15176), (1626, 13440), (1680, 13008), (1792, 12195), (1897, 11520), (1920, 11382), (2016, 10840), (2168, 10080), (2240, 9756), (2304, 9485), (2439, 8960), (2520, 8672), (2688, 8130), (2710, 8064), (2880, 7588), (3252, 6720), (3360, 6504), (3794, 5760), (3840, 5691), (4032, 5420), (4065, 5376), (4336, 5040), (4480, 4878)]