20305909120

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{63839}}^1$

素因数の和:63936

約数の個数: 128

約数和(自身を含む): 56260915200

約数和(自身を除く): 35955006080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 128, 140, 142, 160, 224, 280, 284, 320, 355, 448, 497, 560, 568, 640, 710, 896, 994, 1120, 1136, 1420, 1988, 2240, 2272, 2485, 2840, 3976, 4480, 4544, 4970, 5680, 7952, 9088, 9940, 11360, 15904, 19880, 22720, 31808, 39760, 45440, 63616, 63839, 79520, 127678, 159040, 255356, 318080, 319195, 446873, 510712, 638390, 893746, 1021424, 1276780, 1787492, 2042848, 2234365, 2553560, 3574984, 4085696, 4468730, 4532569, 5107120, 7149968, 8171392, 8937460, 9065138, 10214240, 14299936, 17874920, 18130276, 20428480, 22662845, 28599872, 31727983, 35749840, 36260552, 40856960, 45325690, 57199744, 63455966, 71499680, 72521104, 90651380, 126911932, 142999360, 145042208, 158639915, 181302760, 253823864, 285998720, 290084416, 317279830, 362605520, 507647728, 580168832, 634559660, 725211040, 1015295456, 1269119320, 1450422080, 2030590912, 2538238640, 2900844160, 4061181824, 5076477280, 10152954560, 20305909120]

約数ペア:

[(1, 20305909120), (2, 10152954560), (4, 5076477280), (5, 4061181824), (7, 2900844160), (8, 2538238640), (10, 2030590912), (14, 1450422080), (16, 1269119320), (20, 1015295456), (28, 725211040), (32, 634559660), (35, 580168832), (40, 507647728), (56, 362605520), (64, 317279830), (70, 290084416), (71, 285998720), (80, 253823864), (112, 181302760), (128, 158639915), (140, 145042208), (142, 142999360), (160, 126911932), (224, 90651380), (280, 72521104), (284, 71499680), (320, 63455966), (355, 57199744), (448, 45325690), (497, 40856960), (560, 36260552), (568, 35749840), (640, 31727983), (710, 28599872), (896, 22662845), (994, 20428480), (1120, 18130276), (1136, 17874920), (1420, 14299936), (1988, 10214240), (2240, 9065138), (2272, 8937460), (2485, 8171392), (2840, 7149968), (3976, 5107120), (4480, 4532569), (4544, 4468730), (4970, 4085696), (5680, 3574984), (7952, 2553560), (9088, 2234365), (9940, 2042848), (11360, 1787492), (15904, 1276780), (19880, 1021424), (22720, 893746), (31808, 638390), (39760, 510712), (45440, 446873), (63616, 319195), (63839, 318080), (79520, 255356), (127678, 159040)]