20979920000

素因数分解:

$2^7\times 5^4\times {\mathrm{13}}^1\times {\mathrm{20173}}^1$

素因数の和:20220

約数の個数: 160

約数和(自身を含む): 56248541580

約数和(自身を除く): 35268621580

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 125, 128, 130, 160, 200, 208, 250, 260, 320, 325, 400, 416, 500, 520, 625, 640, 650, 800, 832, 1000, 1040, 1250, 1300, 1600, 1625, 1664, 2000, 2080, 2500, 2600, 3200, 3250, 4000, 4160, 5000, 5200, 6500, 8000, 8125, 8320, 10000, 10400, 13000, 16000, 16250, 20000, 20173, 20800, 26000, 32500, 40000, 40346, 41600, 52000, 65000, 80000, 80692, 100865, 104000, 130000, 161384, 201730, 208000, 260000, 262249, 322768, 403460, 504325, 520000, 524498, 645536, 806920, 1008650, 1040000, 1048996, 1291072, 1311245, 1613840, 2017300, 2097992, 2521625, 2582144, 2622490, 3227680, 4034600, 4195984, 5043250, 5244980, 6455360, 6556225, 8069200, 8391968, 10086500, 10489960, 12608125, 12910720, 13112450, 16138400, 16783936, 20173000, 20979920, 25216250, 26224900, 32276800, 32781125, 33567872, 40346000, 41959840, 50432500, 52449800, 64553600, 65562250, 80692000, 83919680, 100865000, 104899600, 131124500, 161384000, 163905625, 167839360, 201730000, 209799200, 262249000, 322768000, 327811250, 403460000, 419598400, 524498000, 655622500, 806920000, 839196800, 1048996000, 1311245000, 1613840000, 2097992000, 2622490000, 4195984000, 5244980000, 10489960000, 20979920000]

約数ペア:

[(1, 20979920000), (2, 10489960000), (4, 5244980000), (5, 4195984000), (8, 2622490000), (10, 2097992000), (13, 1613840000), (16, 1311245000), (20, 1048996000), (25, 839196800), (26, 806920000), (32, 655622500), (40, 524498000), (50, 419598400), (52, 403460000), (64, 327811250), (65, 322768000), (80, 262249000), (100, 209799200), (104, 201730000), (125, 167839360), (128, 163905625), (130, 161384000), (160, 131124500), (200, 104899600), (208, 100865000), (250, 83919680), (260, 80692000), (320, 65562250), (325, 64553600), (400, 52449800), (416, 50432500), (500, 41959840), (520, 40346000), (625, 33567872), (640, 32781125), (650, 32276800), (800, 26224900), (832, 25216250), (1000, 20979920), (1040, 20173000), (1250, 16783936), (1300, 16138400), (1600, 13112450), (1625, 12910720), (1664, 12608125), (2000, 10489960), (2080, 10086500), (2500, 8391968), (2600, 8069200), (3200, 6556225), (3250, 6455360), (4000, 5244980), (4160, 5043250), (5000, 4195984), (5200, 4034600), (6500, 3227680), (8000, 2622490), (8125, 2582144), (8320, 2521625), (10000, 2097992), (10400, 2017300), (13000, 1613840), (16000, 1311245), (16250, 1291072), (20000, 1048996), (20173, 1040000), (20800, 1008650), (26000, 806920), (32500, 645536), (40000, 524498), (40346, 520000), (41600, 504325), (52000, 403460), (65000, 322768), (80000, 262249), (80692, 260000), (100865, 208000), (104000, 201730), (130000, 161384)]