55180000

素因数分解:

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

素因数の和:150

約数の個数: 120

約数和(自身を含む): 141704640

約数和(自身を除く): 86524640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 89, 100, 124, 125, 155, 160, 178, 200, 248, 250, 310, 356, 400, 445, 496, 500, 620, 625, 712, 775, 800, 890, 992, 1000, 1240, 1250, 1424, 1550, 1780, 2000, 2225, 2480, 2500, 2759, 2848, 3100, 3560, 3875, 4000, 4450, 4960, 5000, 5518, 6200, 7120, 7750, 8900, 10000, 11036, 11125, 12400, 13795, 14240, 15500, 17800, 19375, 20000, 22072, 22250, 24800, 27590, 31000, 35600, 38750, 44144, 44500, 55180, 55625, 62000, 68975, 71200, 77500, 88288, 89000, 110360, 111250, 124000, 137950, 155000, 178000, 220720, 222500, 275900, 310000, 344875, 356000, 441440, 445000, 551800, 620000, 689750, 890000, 1103600, 1379500, 1724375, 1780000, 2207200, 2759000, 3448750, 5518000, 6897500, 11036000, 13795000, 27590000, 55180000]

約数ペア:

[(1, 55180000), (2, 27590000), (4, 13795000), (5, 11036000), (8, 6897500), (10, 5518000), (16, 3448750), (20, 2759000), (25, 2207200), (31, 1780000), (32, 1724375), (40, 1379500), (50, 1103600), (62, 890000), (80, 689750), (89, 620000), (100, 551800), (124, 445000), (125, 441440), (155, 356000), (160, 344875), (178, 310000), (200, 275900), (248, 222500), (250, 220720), (310, 178000), (356, 155000), (400, 137950), (445, 124000), (496, 111250), (500, 110360), (620, 89000), (625, 88288), (712, 77500), (775, 71200), (800, 68975), (890, 62000), (992, 55625), (1000, 55180), (1240, 44500), (1250, 44144), (1424, 38750), (1550, 35600), (1780, 31000), (2000, 27590), (2225, 24800), (2480, 22250), (2500, 22072), (2759, 20000), (2848, 19375), (3100, 17800), (3560, 15500), (3875, 14240), (4000, 13795), (4450, 12400), (4960, 11125), (5000, 11036), (5518, 10000), (6200, 8900), (7120, 7750)]