21091006720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{1307}}^1\times {\mathrm{1801}}^1$

素因数の和:3136

約数の個数: 144

約数和(自身を含む): 57812888448

約数和(自身を除く): 36721881728

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, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1307, 1792, 1801, 2240, 2614, 3602, 4480, 5228, 6535, 7204, 8960, 9005, 9149, 10456, 12607, 13070, 14408, 18010, 18298, 20912, 25214, 26140, 28816, 36020, 36596, 41824, 45745, 50428, 52280, 57632, 63035, 72040, 73192, 83648, 91490, 100856, 104560, 115264, 126070, 144080, 146384, 167296, 182980, 201712, 209120, 230528, 252140, 288160, 292768, 334592, 365960, 403424, 418240, 461056, 504280, 576320, 585536, 731920, 806848, 836480, 1008560, 1152640, 1171072, 1463840, 1613696, 1672960, 2017120, 2305280, 2342144, 2353907, 2927680, 3227392, 4034240, 4707814, 5855360, 8068480, 9415628, 11710720, 11769535, 16136960, 16477349, 18831256, 23539070, 32954698, 37662512, 47078140, 65909396, 75325024, 82386745, 94156280, 131818792, 150650048, 164773490, 188312560, 263637584, 301300096, 329546980, 376625120, 527275168, 602600192, 659093960, 753250240, 1054550336, 1318187920, 1506500480, 2109100672, 2636375840, 3013000960, 4218201344, 5272751680, 10545503360, 21091006720]

約数ペア:

[(1, 21091006720), (2, 10545503360), (4, 5272751680), (5, 4218201344), (7, 3013000960), (8, 2636375840), (10, 2109100672), (14, 1506500480), (16, 1318187920), (20, 1054550336), (28, 753250240), (32, 659093960), (35, 602600192), (40, 527275168), (56, 376625120), (64, 329546980), (70, 301300096), (80, 263637584), (112, 188312560), (128, 164773490), (140, 150650048), (160, 131818792), (224, 94156280), (256, 82386745), (280, 75325024), (320, 65909396), (448, 47078140), (560, 37662512), (640, 32954698), (896, 23539070), (1120, 18831256), (1280, 16477349), (1307, 16136960), (1792, 11769535), (1801, 11710720), (2240, 9415628), (2614, 8068480), (3602, 5855360), (4480, 4707814), (5228, 4034240), (6535, 3227392), (7204, 2927680), (8960, 2353907), (9005, 2342144), (9149, 2305280), (10456, 2017120), (12607, 1672960), (13070, 1613696), (14408, 1463840), (18010, 1171072), (18298, 1152640), (20912, 1008560), (25214, 836480), (26140, 806848), (28816, 731920), (36020, 585536), (36596, 576320), (41824, 504280), (45745, 461056), (50428, 418240), (52280, 403424), (57632, 365960), (63035, 334592), (72040, 292768), (73192, 288160), (83648, 252140), (91490, 230528), (100856, 209120), (104560, 201712), (115264, 182980), (126070, 167296), (144080, 146384)]