19580000

素因数分解:

$2^5\times 5^4\times {\mathrm{11}}^1\times {\mathrm{89}}^1$

素因数の和:130

約数の個数: 120

約数和(自身を含む): 53139240

約数和(自身を除く): 33559240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 89, 100, 110, 125, 160, 176, 178, 200, 220, 250, 275, 352, 356, 400, 440, 445, 500, 550, 625, 712, 800, 880, 890, 979, 1000, 1100, 1250, 1375, 1424, 1760, 1780, 1958, 2000, 2200, 2225, 2500, 2750, 2848, 3560, 3916, 4000, 4400, 4450, 4895, 5000, 5500, 6875, 7120, 7832, 8800, 8900, 9790, 10000, 11000, 11125, 13750, 14240, 15664, 17800, 19580, 20000, 22000, 22250, 24475, 27500, 31328, 35600, 39160, 44000, 44500, 48950, 55000, 55625, 71200, 78320, 89000, 97900, 110000, 111250, 122375, 156640, 178000, 195800, 220000, 222500, 244750, 356000, 391600, 445000, 489500, 611875, 783200, 890000, 979000, 1223750, 1780000, 1958000, 2447500, 3916000, 4895000, 9790000, 19580000]

約数ペア:

[(1, 19580000), (2, 9790000), (4, 4895000), (5, 3916000), (8, 2447500), (10, 1958000), (11, 1780000), (16, 1223750), (20, 979000), (22, 890000), (25, 783200), (32, 611875), (40, 489500), (44, 445000), (50, 391600), (55, 356000), (80, 244750), (88, 222500), (89, 220000), (100, 195800), (110, 178000), (125, 156640), (160, 122375), (176, 111250), (178, 110000), (200, 97900), (220, 89000), (250, 78320), (275, 71200), (352, 55625), (356, 55000), (400, 48950), (440, 44500), (445, 44000), (500, 39160), (550, 35600), (625, 31328), (712, 27500), (800, 24475), (880, 22250), (890, 22000), (979, 20000), (1000, 19580), (1100, 17800), (1250, 15664), (1375, 14240), (1424, 13750), (1760, 11125), (1780, 11000), (1958, 10000), (2000, 9790), (2200, 8900), (2225, 8800), (2500, 7832), (2750, 7120), (2848, 6875), (3560, 5500), (3916, 5000), (4000, 4895), (4400, 4450)]