21000654080

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{977}}^1\times {\mathrm{2399}}^1$

素因数の和:3404

約数の個数: 144

約数和(自身を含む): 57572121600

約数和(自身を除く): 36571467520

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, 977, 1120, 1280, 1792, 1954, 2240, 2399, 3908, 4480, 4798, 4885, 6839, 7816, 8960, 9596, 9770, 11995, 13678, 15632, 16793, 19192, 19540, 23990, 27356, 31264, 33586, 34195, 38384, 39080, 47980, 54712, 62528, 67172, 68390, 76768, 78160, 83965, 95960, 109424, 125056, 134344, 136780, 153536, 156320, 167930, 191920, 218848, 250112, 268688, 273560, 307072, 312640, 335860, 383840, 437696, 537376, 547120, 614144, 625280, 671720, 767680, 875392, 1074752, 1094240, 1250560, 1343440, 1535360, 1750784, 2149504, 2188480, 2343823, 2686880, 3070720, 4299008, 4376960, 4687646, 5373760, 8753920, 9375292, 10747520, 11719115, 16406761, 18750584, 21495040, 23438230, 32813522, 37501168, 46876460, 65627044, 75002336, 82033805, 93752920, 131254088, 150004672, 164067610, 187505840, 262508176, 300009344, 328135220, 375011680, 525016352, 600018688, 656270440, 750023360, 1050032704, 1312540880, 1500046720, 2100065408, 2625081760, 3000093440, 4200130816, 5250163520, 10500327040, 21000654080]

約数ペア:

[(1, 21000654080), (2, 10500327040), (4, 5250163520), (5, 4200130816), (7, 3000093440), (8, 2625081760), (10, 2100065408), (14, 1500046720), (16, 1312540880), (20, 1050032704), (28, 750023360), (32, 656270440), (35, 600018688), (40, 525016352), (56, 375011680), (64, 328135220), (70, 300009344), (80, 262508176), (112, 187505840), (128, 164067610), (140, 150004672), (160, 131254088), (224, 93752920), (256, 82033805), (280, 75002336), (320, 65627044), (448, 46876460), (560, 37501168), (640, 32813522), (896, 23438230), (977, 21495040), (1120, 18750584), (1280, 16406761), (1792, 11719115), (1954, 10747520), (2240, 9375292), (2399, 8753920), (3908, 5373760), (4480, 4687646), (4798, 4376960), (4885, 4299008), (6839, 3070720), (7816, 2686880), (8960, 2343823), (9596, 2188480), (9770, 2149504), (11995, 1750784), (13678, 1535360), (15632, 1343440), (16793, 1250560), (19192, 1094240), (19540, 1074752), (23990, 875392), (27356, 767680), (31264, 671720), (33586, 625280), (34195, 614144), (38384, 547120), (39080, 537376), (47980, 437696), (54712, 383840), (62528, 335860), (67172, 312640), (68390, 307072), (76768, 273560), (78160, 268688), (83965, 250112), (95960, 218848), (109424, 191920), (125056, 167930), (134344, 156320), (136780, 153536)]