220720000

素因数分解:

$2^7\times 5^4\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:154

約数の個数: 160

約数和(自身を含む): 573566400

約数和(自身を除く): 352846400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 89, 100, 124, 125, 128, 155, 160, 178, 200, 248, 250, 310, 320, 356, 400, 445, 496, 500, 620, 625, 640, 712, 775, 800, 890, 992, 1000, 1240, 1250, 1424, 1550, 1600, 1780, 1984, 2000, 2225, 2480, 2500, 2759, 2848, 3100, 3200, 3560, 3875, 3968, 4000, 4450, 4960, 5000, 5518, 5696, 6200, 7120, 7750, 8000, 8900, 9920, 10000, 11036, 11125, 11392, 12400, 13795, 14240, 15500, 16000, 17800, 19375, 19840, 20000, 22072, 22250, 24800, 27590, 28480, 31000, 35600, 38750, 40000, 44144, 44500, 49600, 55180, 55625, 56960, 62000, 68975, 71200, 77500, 80000, 88288, 89000, 99200, 110360, 111250, 124000, 137950, 142400, 155000, 176576, 178000, 220720, 222500, 248000, 275900, 284800, 310000, 344875, 353152, 356000, 441440, 445000, 496000, 551800, 620000, 689750, 712000, 882880, 890000, 1103600, 1240000, 1379500, 1424000, 1724375, 1765760, 1780000, 2207200, 2480000, 2759000, 3448750, 3560000, 4414400, 5518000, 6897500, 7120000, 8828800, 11036000, 13795000, 22072000, 27590000, 44144000, 55180000, 110360000, 220720000]

約数ペア:

[(1, 220720000), (2, 110360000), (4, 55180000), (5, 44144000), (8, 27590000), (10, 22072000), (16, 13795000), (20, 11036000), (25, 8828800), (31, 7120000), (32, 6897500), (40, 5518000), (50, 4414400), (62, 3560000), (64, 3448750), (80, 2759000), (89, 2480000), (100, 2207200), (124, 1780000), (125, 1765760), (128, 1724375), (155, 1424000), (160, 1379500), (178, 1240000), (200, 1103600), (248, 890000), (250, 882880), (310, 712000), (320, 689750), (356, 620000), (400, 551800), (445, 496000), (496, 445000), (500, 441440), (620, 356000), (625, 353152), (640, 344875), (712, 310000), (775, 284800), (800, 275900), (890, 248000), (992, 222500), (1000, 220720), (1240, 178000), (1250, 176576), (1424, 155000), (1550, 142400), (1600, 137950), (1780, 124000), (1984, 111250), (2000, 110360), (2225, 99200), (2480, 89000), (2500, 88288), (2759, 80000), (2848, 77500), (3100, 71200), (3200, 68975), (3560, 62000), (3875, 56960), (3968, 55625), (4000, 55180), (4450, 49600), (4960, 44500), (5000, 44144), (5518, 40000), (5696, 38750), (6200, 35600), (7120, 31000), (7750, 28480), (8000, 27590), (8900, 24800), (9920, 22250), (10000, 22072), (11036, 20000), (11125, 19840), (11392, 19375), (12400, 17800), (13795, 16000), (14240, 15500)]