21488000

素因数分解:

$2^7\times 5^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:125

約数の個数: 128

約数和(自身を含む): 57283200

約数和(自身を除く): 35795200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 79, 80, 85, 100, 125, 128, 136, 158, 160, 170, 200, 250, 272, 316, 320, 340, 395, 400, 425, 500, 544, 632, 640, 680, 790, 800, 850, 1000, 1088, 1264, 1343, 1360, 1580, 1600, 1700, 1975, 2000, 2125, 2176, 2528, 2686, 2720, 3160, 3200, 3400, 3950, 4000, 4250, 5056, 5372, 5440, 6320, 6715, 6800, 7900, 8000, 8500, 9875, 10112, 10744, 10880, 12640, 13430, 13600, 15800, 16000, 17000, 19750, 21488, 25280, 26860, 27200, 31600, 33575, 34000, 39500, 42976, 50560, 53720, 54400, 63200, 67150, 68000, 79000, 85952, 107440, 126400, 134300, 136000, 158000, 167875, 171904, 214880, 252800, 268600, 272000, 316000, 335750, 429760, 537200, 632000, 671500, 859520, 1074400, 1264000, 1343000, 2148800, 2686000, 4297600, 5372000, 10744000, 21488000]

約数ペア:

[(1, 21488000), (2, 10744000), (4, 5372000), (5, 4297600), (8, 2686000), (10, 2148800), (16, 1343000), (17, 1264000), (20, 1074400), (25, 859520), (32, 671500), (34, 632000), (40, 537200), (50, 429760), (64, 335750), (68, 316000), (79, 272000), (80, 268600), (85, 252800), (100, 214880), (125, 171904), (128, 167875), (136, 158000), (158, 136000), (160, 134300), (170, 126400), (200, 107440), (250, 85952), (272, 79000), (316, 68000), (320, 67150), (340, 63200), (395, 54400), (400, 53720), (425, 50560), (500, 42976), (544, 39500), (632, 34000), (640, 33575), (680, 31600), (790, 27200), (800, 26860), (850, 25280), (1000, 21488), (1088, 19750), (1264, 17000), (1343, 16000), (1360, 15800), (1580, 13600), (1600, 13430), (1700, 12640), (1975, 10880), (2000, 10744), (2125, 10112), (2176, 9875), (2528, 8500), (2686, 8000), (2720, 7900), (3160, 6800), (3200, 6715), (3400, 6320), (3950, 5440), (4000, 5372), (4250, 5056)]