645900000

素因数分解:

$2^5\times 3^1\times 5^5\times {\mathrm{2153}}^1$

素因数の和:2191

約数の個数: 144

約数和(自身を含む): 2120208048

約数和(自身を除く): 1474308048

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 96, 100, 120, 125, 150, 160, 200, 240, 250, 300, 375, 400, 480, 500, 600, 625, 750, 800, 1000, 1200, 1250, 1500, 1875, 2000, 2153, 2400, 2500, 3000, 3125, 3750, 4000, 4306, 5000, 6000, 6250, 6459, 7500, 8612, 9375, 10000, 10765, 12000, 12500, 12918, 15000, 17224, 18750, 20000, 21530, 25000, 25836, 30000, 32295, 34448, 37500, 43060, 50000, 51672, 53825, 60000, 64590, 68896, 75000, 86120, 100000, 103344, 107650, 129180, 150000, 161475, 172240, 206688, 215300, 258360, 269125, 300000, 322950, 344480, 430600, 516720, 538250, 645900, 807375, 861200, 1033440, 1076500, 1291800, 1345625, 1614750, 1722400, 2153000, 2583600, 2691250, 3229500, 4036875, 4306000, 5167200, 5382500, 6459000, 6728125, 8073750, 8612000, 10765000, 12918000, 13456250, 16147500, 20184375, 21530000, 25836000, 26912500, 32295000, 40368750, 43060000, 53825000, 64590000, 80737500, 107650000, 129180000, 161475000, 215300000, 322950000, 645900000]

約数ペア:

[(1, 645900000), (2, 322950000), (3, 215300000), (4, 161475000), (5, 129180000), (6, 107650000), (8, 80737500), (10, 64590000), (12, 53825000), (15, 43060000), (16, 40368750), (20, 32295000), (24, 26912500), (25, 25836000), (30, 21530000), (32, 20184375), (40, 16147500), (48, 13456250), (50, 12918000), (60, 10765000), (75, 8612000), (80, 8073750), (96, 6728125), (100, 6459000), (120, 5382500), (125, 5167200), (150, 4306000), (160, 4036875), (200, 3229500), (240, 2691250), (250, 2583600), (300, 2153000), (375, 1722400), (400, 1614750), (480, 1345625), (500, 1291800), (600, 1076500), (625, 1033440), (750, 861200), (800, 807375), (1000, 645900), (1200, 538250), (1250, 516720), (1500, 430600), (1875, 344480), (2000, 322950), (2153, 300000), (2400, 269125), (2500, 258360), (3000, 215300), (3125, 206688), (3750, 172240), (4000, 161475), (4306, 150000), (5000, 129180), (6000, 107650), (6250, 103344), (6459, 100000), (7500, 86120), (8612, 75000), (9375, 68896), (10000, 64590), (10765, 60000), (12000, 53825), (12500, 51672), (12918, 50000), (15000, 43060), (17224, 37500), (18750, 34448), (20000, 32295), (21530, 30000), (25000, 25836)]