21564500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:138

約数の個数: 96

約数和(自身を含む): 51891840

約数和(自身を除く): 30327340

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 43, 50, 59, 68, 85, 86, 100, 118, 125, 170, 172, 215, 236, 250, 295, 340, 425, 430, 500, 590, 731, 850, 860, 1003, 1075, 1180, 1462, 1475, 1700, 2006, 2125, 2150, 2537, 2924, 2950, 3655, 4012, 4250, 4300, 5015, 5074, 5375, 5900, 7310, 7375, 8500, 10030, 10148, 10750, 12685, 14620, 14750, 18275, 20060, 21500, 25075, 25370, 29500, 36550, 43129, 50150, 50740, 63425, 73100, 86258, 91375, 100300, 125375, 126850, 172516, 182750, 215645, 250750, 253700, 317125, 365500, 431290, 501500, 634250, 862580, 1078225, 1268500, 2156450, 4312900, 5391125, 10782250, 21564500]

約数ペア:

[(1, 21564500), (2, 10782250), (4, 5391125), (5, 4312900), (10, 2156450), (17, 1268500), (20, 1078225), (25, 862580), (34, 634250), (43, 501500), (50, 431290), (59, 365500), (68, 317125), (85, 253700), (86, 250750), (100, 215645), (118, 182750), (125, 172516), (170, 126850), (172, 125375), (215, 100300), (236, 91375), (250, 86258), (295, 73100), (340, 63425), (425, 50740), (430, 50150), (500, 43129), (590, 36550), (731, 29500), (850, 25370), (860, 25075), (1003, 21500), (1075, 20060), (1180, 18275), (1462, 14750), (1475, 14620), (1700, 12685), (2006, 10750), (2125, 10148), (2150, 10030), (2537, 8500), (2924, 7375), (2950, 7310), (3655, 5900), (4012, 5375), (4250, 5074), (4300, 5015)]