19966800

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{2377}}^1$

素因数の和:2405

約数の個数: 120

約数和(自身を含む): 73128256

約数和(自身を除く): 53161456

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 140, 150, 168, 175, 200, 210, 240, 280, 300, 336, 350, 400, 420, 525, 560, 600, 700, 840, 1050, 1200, 1400, 1680, 2100, 2377, 2800, 4200, 4754, 7131, 8400, 9508, 11885, 14262, 16639, 19016, 23770, 28524, 33278, 35655, 38032, 47540, 49917, 57048, 59425, 66556, 71310, 83195, 95080, 99834, 114096, 118850, 133112, 142620, 166390, 178275, 190160, 199668, 237700, 249585, 266224, 285240, 332780, 356550, 399336, 415975, 475400, 499170, 570480, 665560, 713100, 798672, 831950, 950800, 998340, 1247925, 1331120, 1426200, 1663900, 1996680, 2495850, 2852400, 3327800, 3993360, 4991700, 6655600, 9983400, 19966800]

約数ペア:

[(1, 19966800), (2, 9983400), (3, 6655600), (4, 4991700), (5, 3993360), (6, 3327800), (7, 2852400), (8, 2495850), (10, 1996680), (12, 1663900), (14, 1426200), (15, 1331120), (16, 1247925), (20, 998340), (21, 950800), (24, 831950), (25, 798672), (28, 713100), (30, 665560), (35, 570480), (40, 499170), (42, 475400), (48, 415975), (50, 399336), (56, 356550), (60, 332780), (70, 285240), (75, 266224), (80, 249585), (84, 237700), (100, 199668), (105, 190160), (112, 178275), (120, 166390), (140, 142620), (150, 133112), (168, 118850), (175, 114096), (200, 99834), (210, 95080), (240, 83195), (280, 71310), (300, 66556), (336, 59425), (350, 57048), (400, 49917), (420, 47540), (525, 38032), (560, 35655), (600, 33278), (700, 28524), (840, 23770), (1050, 19016), (1200, 16639), (1400, 14262), (1680, 11885), (2100, 9508), (2377, 8400), (2800, 7131), (4200, 4754)]